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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.05217">arXiv:2409.05217</a> <span> [<a href="https://arxiv.org/pdf/2409.05217">pdf</a>, <a href="https://arxiv.org/format/2409.05217">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Information Theory">cs.IT</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Emerging Technologies">cs.ET</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Performance">cs.PF</span> </div> </div> <p class="title is-5 mathjax"> From Concept to Reality: 5G Positioning with Open-Source Implementation of UL-TDoA in OpenAirInterface </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/cs?searchtype=author&query=Malik%2C+A">Adeel Malik</a>, <a href="/search/cs?searchtype=author&query=Ahadi%2C+M">Mohsen Ahadi</a>, <a href="/search/cs?searchtype=author&query=Kaltenberger%2C+F">Florian Kaltenberger</a>, <a href="/search/cs?searchtype=author&query=Warnke%2C+K">Klaus Warnke</a>, <a href="/search/cs?searchtype=author&query=Thinh%2C+N+T">Nguyen Tien Thinh</a>, <a href="/search/cs?searchtype=author&query=Bouknana%2C+N">Nada Bouknana</a>, <a href="/search/cs?searchtype=author&query=Thienot%2C+C">Cedric Thienot</a>, <a href="/search/cs?searchtype=author&query=Onche%2C+G">Godswill Onche</a>, <a href="/search/cs?searchtype=author&query=Arora%2C+S">Sagar Arora</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.05217v3-abstract-short" style="display: inline;"> This paper presents, for the first time, an open-source implementation of the 3GPP Uplink Time Difference of Arrival (UL-TDoA) positioning method using the OpenAirInterface (OAI) framework. UL-TDoA is a critical positioning technique in 5G networks, leveraging the time differences of signal arrival at multiple base stations to determine the precise location of User Equipment (UE). This implementat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.05217v3-abstract-full').style.display = 'inline'; document.getElementById('2409.05217v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.05217v3-abstract-full" style="display: none;"> This paper presents, for the first time, an open-source implementation of the 3GPP Uplink Time Difference of Arrival (UL-TDoA) positioning method using the OpenAirInterface (OAI) framework. UL-TDoA is a critical positioning technique in 5G networks, leveraging the time differences of signal arrival at multiple base stations to determine the precise location of User Equipment (UE). This implementation aims to democratize access to advanced positioning technology by integrating UL-TDoA capabilities into both the Radio Access Network (RAN) and Core Network (CN) components of OAI, providing a comprehensive and 3GPP-compliant solution. The development includes the incorporation of essential protocol procedures, message flows, and interfaces as defined by 3GPP standards. Validation is conducted using two distinct methods: an OAI-RF simulator-based setup for controlled testing and an O-RAN-based Localization Testbed at EURECOM in real-world conditions. The results demonstrate the viability of this open-source UL-TDoA implementation, enabling precise positioning in various environments. By making this implementation publicly available, the study paves the way for widespread research, development, and innovation in the field of 5G positioning technologies, fostering collaboration and accelerating the advancement of cellular network positioning. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.05217v3-abstract-full').style.display = 'none'; document.getElementById('2409.05217v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 March, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 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