Network Listening Signal Generation Using Time-Frequency Patterns
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Solution Overview
Problem
Current methods for clock synchronization in wireless communication networks, particularly in small cell and macro cell environments, face challenges in efficiently generating and parsing network listening signals, leading to increased complexity and computational overhead.
Innovation Solution
A method and device for generating a simple network listening signal by determining a time-frequency pattern specific to the type of network listening resource, which is then used to transmit a sequence for clock synchronization, reducing complexity and computational requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex network listening signals are generated to support multiple network listening resources, then the system can handle diverse synchronization scenarios, but the generation and parsing complexity increases
Solution Approach 1:
The patent segments the network listening signal into a base sequence with a time-frequency pattern and cell-specific parameters. The base sequence is reused across different network listening resources (MBSFN subframes, guard periods, uplink/downlink subframes), while cell-specific parameters differentiate the signals. This segmentation allows a single base sequence to serve multiple purposes, reducing generation complexity while maintaining versatility.
Solution Approach 2:
The base sequence is designed as a universal component that can be used for all types of network listening resources. By transmitting the same base sequence with different time-frequency patterns and cell-specific parameters, the system achieves multi-functionality without requiring separate sequences for each resource type, thereby simplifying the overall system complexity.
2Reliability
If different network listening resources are used for clock synchronization, then user equipment service is minimized, but computational complexity for parsing increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the time-frequency pattern of the base sequence and establishing a correspondence relationship between network listening resource types and specific time-frequency patterns. This pre-establishment allows receiving devices to quickly identify and parse the appropriate sequence type without complex real-time computation, reducing parsing complexity while ensuring reliable synchronization.
Solution Approach 2:
The system changes parameters (time-frequency pattern, cell-specific parameters) rather than changing the fundamental base sequence structure. By maintaining a consistent base sequence and varying only the time-frequency pattern and cell-specific parameters, the patent achieves reliable clock synchronization across different resources while minimizing computational complexity for parsing, as devices only need to adjust for parameter variations rather than parse entirely different signal structures.
Data Source
AI summary
Embodiments of the present invention provide a network listening method and device, where the method includes: determining, by a first device according to a type of a network listening resource, a time-frequency pattern that is of a first sequence and is corresponding to the network listening resource of this type; and then transmitting the first sequence to a second device by using the time-frequency pattern of the first sequence, so that the second device performs network listening according to the first sequence. The time-frequency pattern of the first sequence determined in this process is a time-frequency pattern obtained by transforming a time-frequency pattern of a base sequence, and a network listening signal obtained therefrom, that is, the time-frequency pattern of the first sequence, is simple, which can achieve a purpose of reducing complexity of generating a network listening signal and computational complexity of parsing a network listening signal.