Positioning SRS Time Window Configuration for Collision-Aware Uplink
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently transmitting and receiving signals, particularly in scenarios requiring precise timing and frequency hopping configurations for positioning and sensing tasks.
Innovation Solution
A method for configuring uplink time windows for sounding reference signals (SRS) based on specific parameters such as uplink time window information, frequency hopping, and transmission duration, allowing for prioritized transmission of SRS over other signals, along with a user equipment (UE) and base station (BS) implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SRS transmission is prioritized over other signals, then positioning accuracy is improved, but signal collision and interference increase
Solution Approach 1:
The network configures uplink time window information in advance, specifying time resources where SRS transmissions are prioritized. This preliminary configuration prevents signal collisions by reserving dedicated time slots for positioning SRS before conflicts can occur with other uplink signals.
Solution Approach 2:
The uplink time window is segmented into specific time resources (symbols or slots) where SRS transmission has priority. This segmentation separates positioning SRS transmissions from other uplink signals in time, reducing interference while maintaining positioning accuracy.
2Productivity
If uplink time window is configured for SRS transmission, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The uplink time window configuration serves multiple functions: it identifies SRS transmission opportunities, establishes priority rules, and defines time resource allocation. This multi-functionality reduces the need for separate configuration mechanisms, offsetting the complexity through consolidated management.
Solution Approach 2:
The network dynamically adjusts uplink time window parameters (time resource offsets, duration) based on positioning requirements and traffic conditions. This parameter-based flexibility allows efficient adaptation without fundamental system changes, managing complexity through configurable parameters rather than structural modifications.
3Measurement precision
If frequency hopping is applied to SRS resource, then positioning accuracy is improved, but transmission duration increases
Solution Approach 1:
The uplink time window is configured in advance to encompass the entire frequency-hopping SRS transmission sequence. This preliminary time allocation ensures that all hopping instances fit within a predetermined window, managing the extended duration through upfront planning rather than ad-hoc adjustments.
Solution Approach 2:
Frequency hopping follows a periodic pattern across multiple SRS transmissions within the uplink time window. This periodic structure allows the network to predict and accommodate the extended transmission duration, organizing multiple short hopping cycles within a unified time framework rather than creating unmanaged continuous transmission.
Data Source
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AI summary
Disclosed are a method and apparatus for transmitting a sounding reference signal (SRS) for positioning by a user equipment (UE) in a wireless communication system. The method includes receiving SRS configuration information for configuring at least one SRS resource, and transmitting the SRS in a first SRS resource from among the at least one SRS resource based on the SRS configuration information.