Terminal Positioning via SSB-Based Random Access Resources
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Solution Overview
Problem
Existing communication systems face challenges in accurately positioning terminal devices due to limited utilization of synchronization signal blocks and random access resources, which affect the precision and efficiency of location identification.
Innovation Solution
A method involving the transmission of multiple synchronization signal blocks (SSBs) by network devices to terminal devices, enabling the determination of positioning random access resources, followed by the sending of positioning reference signals using these resources to improve positioning accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple synchronization signal blocks are sent to terminal devices, then positioning accuracy is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent applies multi-functionality by enabling synchronization signal blocks to serve dual purposes: both synchronization establishment and positioning measurement. The same SSBs used for initial access and synchronization are simultaneously utilized as reference signals for positioning, eliminating the need for separate positioning reference signals and reducing system complexity while improving positioning accuracy
Solution Approach 2:
The patent merges the synchronization function and positioning function into a unified process. By combining synchronization signal transmission with positioning reference signal functionality, the system achieves both synchronization and positioning objectives using a single signal structure, thereby reducing the number of separate signals and lowering overall system complexity
2Measurement precision
If positioning reference signals are sent during random access procedure, then positioning accuracy is improved, but transmission time and processing delays increase
Solution Approach 1:
The patent applies preliminary action by performing positioning measurements using synchronization signal blocks before the formal random access procedure completes. Terminal devices can conduct positioning measurements on received SSBs during the initial synchronization phase, obtaining positioning information in advance and reducing the overall positioning delay
Solution Approach 2:
The patent ensures continuity of useful action by enabling positioning measurements to occur continuously during the synchronization signal reception process. Instead of waiting for separate positioning signals, the system continuously utilizes available synchronization signals for positioning measurements throughout the random access procedure, maximizing measurement opportunities and reducing delays
Data Source
AI summary
A positioning method is applied in a terminal device. The positioning method includes: receiving a plurality of synchronization signal blocks; determining a plurality of positioning random access resources corresponding to the plurality of synchronization signal blocks, wherein the positioning random access resources are random access resources for positioning; and sending at least one positioning reference signal according to the plurality of positioning random access resources.