18091151. GEOLOCATION BY MEASURING ROUNDTRIP TIME WITHIN RU simplified abstract (DISH WIRELESS L.L.C.)

GEOLOCATION BY MEASURING ROUNDTRIP TIME WITHIN RU

Organization Name

DISH WIRELESS L.L.C.

Inventor(s)

Khalid W. Al-mufti of Sterling VA (US)

Mehdi Alasti of Reston VA (US)

GEOLOCATION BY MEASURING ROUNDTRIP TIME WITHIN RU - A simplified explanation of the abstract

This abstract first appeared for US patent application 18091151 titled 'GEOLOCATION BY MEASURING ROUNDTRIP TIME WITHIN RU

Simplified Explanation

This patent application describes a method for estimating Round Trip Time (RTT) in Open Radio Access Networks (O-RANs) to determine the location of mobile User Equipment (UE) devices. The approach involves the transmission of a Positioning Reference Signal (PRS) by a Radio Unit (RU) and the return of a Sounding Reference Signal (SRS) by the UE to a Distributed Unit (DU) or Central Unit (CU). By analyzing the difference between the transmission and reception times of these signals, the RTT can be estimated.

• The method is specifically designed for O-RANs that separate basestation functions into RU and DU/CU.
• PRS is transmitted by RU based on DU/CU schedule, while SRS is sent back by UE to DU/CU.
• UE estimates its internal delay, which is subtracted from the difference between PRS transmission and SRS reception times to calculate RTT.
• RTTs between UE and multiple RUs can be used to determine the UE's location.

Key Features and Innovation

• Estimation of RTT for location determination in O-RANs.
• Use of PRS and SRS signals for RTT calculation.
• Incorporation of UE's internal delay in RTT estimation.
• Potential for multi-RU RTT measurements for precise location tracking.

Potential Applications

The technology can be applied in:

• Location-based services for mobile devices.
• Network optimization in O-RANs.
• Emergency services for accurate UE location tracking.

Problems Solved

• Efficient RTT estimation in disaggregated O-RAN architecture.
• Improved accuracy in determining UE location.
• Enhanced network performance through precise timing measurements.

Benefits

• Enhanced location accuracy for mobile devices.
• Better network management and optimization.
• Improved emergency response capabilities.

Commercial Applications

Title: Enhanced Location Tracking Technology for O-RANs This technology can be utilized in:

• Mobile network operators for improved service delivery.
• Emergency response organizations for precise location tracking.
• Location-based service providers for enhanced user experience.

Prior Art

Readers can explore prior research on RTT estimation methods in O-RANs and location tracking technologies in mobile networks.

Frequently Updated Research

Stay updated on advancements in RTT estimation techniques and location tracking technologies in O-RANs for the latest developments in the field.

Questions about Round Trip Time Estimation

How does RTT estimation impact the accuracy of location tracking in mobile networks?

RTT estimation plays a crucial role in determining the precise location of mobile devices by measuring the time taken for signals to travel between different network elements.

What are the key challenges in implementing RTT estimation in O-RANs?

Implementing RTT estimation in O-RANs may face challenges related to synchronization, signal interference, and network complexity.

Original Abstract Submitted

An approach for estimating Round Trip Time (RTT) such as used for estimating a location of mobile User Equipment (UE) devices, particularly adapted for Open Radio Access Networks (O-RANs) that disaggregate basestation functions into a Radio Unit (RU) and a Distributed Unit (DU) or Central Unit (CU). A Positioning Reference Signal (PRS) is transmitted by the RU according to schedule determined by the DU or CU. A Sounding Reference Signal (SRS) is returned by the UE to the DU or CU, with an estimate by the UE of its internal delay. The RU reports an estimate of the difference seen between a time of transmission of the PRS and time of reception of the SRS. The RTT is then estimated by subtracting the UE's internal delay from this difference. RTTs taken between the UE and two or more RU's may further determine a location of the UE.