Cell Reselection via Common SRS Resources in Positioning Areas
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Solution Overview
Problem
In existing uplink positioning procedures, terminals need to frequently re-establish RRC connections and obtain SRS resources when reselecting cells, leading to increased power consumption, which contradicts the requirement for low power consumption.
Innovation Solution
Configuring a same SRS resource for a plurality of cells within a positioning area, allowing the terminal to perform cell reselection without re-establishing RRC connections or re-obtaining SRS resources, by using first and second indication information to prioritize cells within the positioning area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs cell reselection by re-establishing RRC connection and re-obtaining SRS resource, then the terminal can ensure communication quality and obtain updated positioning resources, but the power consumption of the terminal increases
Solution Approach 1:
The patent merges multiple cells into a positioning area and assigns a common SRS resource to all cells within that area. When the terminal reselects cells within the same positioning area, it can reuse the existing SRS resource without re-establishing RRC connection, thus reducing power consumption while maintaining positioning functionality
Solution Approach 2:
The SRS resource is designed to be universal across multiple cells within a positioning area. A single SRS resource configuration can be used for positioning purposes in any cell belonging to the same positioning area, eliminating the need for cell-specific SRS resource reconfiguration
2Measurement precision
If the terminal frequently re-establishes RRC connection to obtain SRS resource, then the terminal can maintain accurate positioning capability, but the frequency of SRS resource configuration acquisition increases
Solution Approach 1:
The network pre-configures positioning areas and assigns common SRS resources to multiple cells within each positioning area before the terminal needs to use them. This preliminary configuration allows the terminal to perform cell reselection without frequent RRC re-establishment, reducing the frequency of configuration acquisition while maintaining positioning accuracy
Data Source
AI summary
This application discloses a cell reselection method and an apparatus. The method includes: A terminal receives first indication information indicating one or more positioning areas, each of the one or more positioning areas includes a plurality of cells having same resource configuration information; and the terminal performs cell reselection in accordance with the first indication information to reselect a cell in the positioning area.