Uplink Reference Signal Configuration for Frequency Offset Correction
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Solution Overview
Problem
Existing communication systems face challenges in achieving high accuracy for frequency offset estimation, particularly in high-speed scenarios where Doppler frequency offsets are large, leading to inter-subcarrier interference and increased scheduling overheads.
Innovation Solution
The proposed solution involves configuring uplink and downlink reference signals with same antenna ports and specific time and frequency domain intervals to ensure phase continuity and reduce scheduling overheads, enabling accurate frequency offset estimation and compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional communication protocols are used, then device compatibility is improved, but communication overhead and power consumption increase
Solution Approach 1:
The communication protocol is segmented into two distinct modes: conventional mode for compatibility and optimized mode for efficiency. The system divides communication tasks based on requirements, using conventional protocols only when necessary for device compatibility while employing optimized protocols for routine operations, thereby reducing overall power consumption while maintaining adaptability.
Solution Approach 2:
The communication protocol dynamically switches between conventional and optimized modes based on real-time conditions such as device type, communication requirements, and power availability. This dynamic adaptation allows the system to maintain compatibility with various devices while optimizing power consumption for each specific communication scenario.
2Reliability
If detailed handover information is transmitted, then communication reliability is improved, but communication overhead increases
Solution Approach 1:
The handover information transmission uses local quality by selectively transmitting different levels of detail based on the specific handover scenario. Critical parameters such as target cell identity and basic connection information are always transmitted, while optional detailed parameters are transmitted only when necessary for the specific handover context, reducing overall overhead while maintaining reliability.
Solution Approach 2:
The handover information structure is designed to be universal, with a core set of parameters that serve all handover scenarios and optional parameters that can be added when needed. This multi-functional information structure allows the same message format to handle both simple and complex handovers, reducing overhead for common cases while maintaining reliability for all cases.
3Loss of energy
If power saving modes are implemented, then power consumption is reduced, but communication responsiveness deteriorates
Solution Approach 1:
The system implements periodic wake-up cycles where the device alternates between low-power sleep mode and active communication mode. During sleep mode, power consumption is minimized while the device periodically wakes to check for messages and perform necessary communications. This periodic action maintains acceptable responsiveness while significantly reducing average power consumption.
Solution Approach 2:
The communication system uses feedback mechanisms to dynamically adjust the power saving mode parameters based on communication patterns and urgency. When high-priority messages are detected or communication activity increases, the system automatically reduces power saving aggressiveness to maintain responsiveness. Conversely, during low-activity periods, power saving modes are intensified, optimizing the balance between power consumption and responsiveness.
Data Source
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AI summary
This application discloses a communication method and apparatus, to improve accuracy of correcting a frequency offset. The method includes the following steps: receiving configuration information from a network device, where the configuration information is for configuring one or more uplink reference signal resources, the one or more uplink reference signal resources include a first time unit and a second time unit, and a first antenna port corresponding to the first time unit is the same as a second antenna port corresponding to the second time unit; and sending an uplink reference signal to the network device based on the configuration information.