Synchronization Signal Grouping for Low-Power Terminal Positioning
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Solution Overview
Problem
Existing communication systems face limitations in supporting efficient positioning methods for terminal devices, particularly in managing synchronization signal blocks and random access preambles, which can lead to excessive power consumption and limited connectivity options.
Innovation Solution
A method involving the division of synchronization signal blocks into groups and sending random access preambles corresponding to these groups on specific resources, allowing for efficient positioning measurements while minimizing power consumption by optimizing the use of random access preambles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device processes all synchronization signal blocks individually, then positioning measurement accuracy is improved, but power consumption increases and processing complexity increases
Solution Approach 1:
The terminal device divides multiple synchronization signal blocks into multiple groups, where each group contains one or more synchronization signal blocks. The device then performs random access preamble sending operations for each group rather than processing each block individually. This segmentation reduces the number of separate processing operations while still maintaining positioning measurement capability across all blocks.
2Measurement precision
If the terminal device processes all synchronization signal blocks individually, then positioning measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The terminal device divides multiple synchronization signal blocks into multiple groups, where each group contains one or more synchronization signal blocks. The device then performs random access preamble sending operations for each group rather than processing each block individually. This segmentation reduces the number of separate processing operations while still maintaining positioning measurement capability across all blocks.
3Use of energy by moving object
If synchronization signal blocks are grouped and random access preambles are sent for each group, then power consumption is reduced, but positioning measurement granularity is reduced
Solution Approach 1:
The patent allows flexible configuration of the grouping parameter N, which determines how many synchronization signal blocks are grouped together. The terminal device and network device can dynamically adjust N based on positioning accuracy requirements and power consumption constraints. When higher accuracy is needed, N can be set to 1 (no grouping), and when power saving is prioritized, N can be set to a larger value.
Data Source
AI summary
A positioning method applied to a terminal device is provided. The method includes: receiving a plurality of synchronization signal blocks sent by a network device; dividing the plurality of synchronization signal blocks into M synchronization signal block groups, where M is a positive integer; sending, for each of the synchronization signal block groups, random access preambles corresponding to N synchronization signal blocks on random access resources corresponding to the N synchronization signal blocks belonging to the same synchronization signal block group, where the random access preambles is configured for positioning, and N is a positive integer.