Adaptive Timing Advance Report Format for E-CID Positioning
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Solution Overview
Problem
In existing E-CID positioning schemes, base stations cannot determine an appropriate timing advance (TA) report format for returning positioning measurement results to the Evolved Serving Mobile Location Center (E-SMLC), leading to inaccuracies in user equipment location calculations.
Innovation Solution
A method and system that determine a TA report format based on whether the user equipment supports measurement of its reception and transmission time difference and whether the base station supports combining this measurement with its own reception and transmission time difference, enabling the base station to return positioning measurement results in the appropriate format to the E-SMLC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the base station uses a fixed TA report format for positioning measurements, then the positioning process is simple, but the positioning accuracy deteriorates because the inappropriate TA format cannot reflect the actual measurement capabilities
Solution Approach 1:
The patent applies dynamics by making the TA report format adaptive rather than fixed. The base station dynamically selects between Type 1 and Type 2 TA report formats based on real-time measurement capabilities of the UE and eNB, and the available time difference information. This dynamic adaptation allows the system to optimize positioning accuracy for each specific scenario while managing complexity through structured capability exchange mechanisms.
Solution Approach 2:
The patent changes the parameter of TA report format from a static configuration to a variable that can switch between Type 1 and Type 2 based on measurement capabilities and time difference information availability. The E-SMLC determines the appropriate format by evaluating parameters such as UE Rx-Tx time difference measurement support, eNB Rx-Tx time difference measurement support, and whether to combine these measurements, thereby optimizing positioning accuracy through parameter adaptation.
2Measurement precision
If the base station combines UE Rx-Tx time difference measurement with eNB Rx-Tx time difference measurement, then the positioning accuracy improves, but the measurement complexity increases
Solution Approach 1:
The patent applies self-service by enabling the base station to autonomously evaluate its own measurement capabilities and those of the UE, and to automatically determine whether combining measurements is beneficial. The eNB assesses whether it has Rx-Tx time difference measurement capability, checks UE capability information, and decides on measurement combination without external intervention, thereby improving positioning accuracy while managing complexity through self-assessment mechanisms.
Solution Approach 2:
The patent implements feedback through capability exchange between UE and E-SMLC, and through the E-SMLC's determination of TA report format based on received capability information. The UE provides feedback on its measurement capabilities, the E-SMLC processes this feedback along with eNB capabilities, and determines the optimal TA report format and measurement combination strategy, creating a closed-loop system that balances accuracy improvement with complexity management.
Data Source
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AI summary
The present invention discloses a method, system and device for realizing location measurement. The method includes the following steps in the location process of the Enhanced Cell Identify (E-CID) of the UE, the reporting format of the Timing Advance (TA) is determined according to the obtained information which is about whether the User Equipment (UE) can support the measurement of the receiving-transmitting (Rx-Tx) time difference, and also according to the united information which is about whether the evolve Node B (eNB) can support the measurement of the Rx-Tx time difference of the eNB and the measurement of the Rx-Tx time difference of the UE (401), and after the eNB processes the E-CID location measurement, the location measurement result is returned by using the determined reporting format of the TA to the Evolved Serving Mobile Location Center (E-SMLC) (402). The present invention can solve the problem that the eNB can not determine which type of reporting format of TA is to be used for returning the location measurement result to the E-SMLC in the art.