Cell Parameter Set Identification via Synchronization Signal Features
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Solution Overview
Problem
In 5G NR technologies, terminals face the challenge of identifying the parameter set used by a cell before accessing the network, as multiple parameter sets are supported, and the parameter set is unknown to the terminal.
Innovation Solution
A method and device that enable a terminal to identify a parameter set of a cell by determining feature information of an identification signal based on the parameter set, which includes subcarrier spacing, subframe length, and other parameters, and sending this information to the terminal using synchronization signals, broadcast channels, or reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cell supports multiple parameter sets in 5G NR, then the system's adaptability and versatility are improved, but the terminal's difficulty in identifying the correct parameter set increases
Solution Approach 1:
The base station performs preliminary action by embedding parameter set information into synchronization signals and system information before the terminal needs to access the network. The terminal detects these pre-configured signals to identify the correct parameter set without needing to perform complex analysis during the access process.
Solution Approach 2:
Synchronization signals and system information blocks serve as intermediaries that carry parameter set information. These signals act as mediators between the base station and terminal, enabling the terminal to indirectly obtain the parameter set information without direct communication or complex detection processes.
2Measurement precision
If the terminal performs blind detection of multiple parameter sets, then the parameter set identification accuracy is improved, but the time consumption and processing complexity increase
Solution Approach 1:
The base station provides feedback by explicitly indicating the parameter set information through synchronization signals and system information. This feedback mechanism guides the terminal to the correct parameter set directly, eliminating the need for time-consuming blind detection across multiple possibilities.
Solution Approach 2:
The invention extracts the parameter set identification burden from the terminal by having the base station explicitly provide this information through synchronization signals and system information blocks. This extraction reduces the terminal's processing time and complexity while maintaining accurate parameter set identification.
3Reliability
If the base station transmits parameter set information through multiple channels, then the information transmission reliability is improved, but the device complexity and signal interference increase
Solution Approach 1:
Synchronization signals serve multiple functions: they provide time synchronization, frequency synchronization, and simultaneously carry parameter set information. This multi-functionality reduces the need for separate dedicated channels, thereby reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The invention merges parameter set information transmission with the existing synchronization signal and system information block structures. By combining these functions into established transmission frameworks, the system avoids adding separate complex channels while ensuring reliable information delivery.
Data Source
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AI summary
Embodiments of the present invention relate to the communications field, and provide a method for determining a parameter set of a cell, a method for sending a parameter set of a cell, a device, and a system, so that a terminal can identify a parameter set of a cell in 5G NR supporting a plurality of parameter sets of the cell. The solutions provided in the embodiments of the present invention include: obtaining, by a terminal, an identification signal of a cell; obtaining feature information of the identification signal based on the identification signal; and determining a parameter set of the cell based on the feature information of the identification signal. The present invention is used to determine the parameter set of the cell.