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This article provides a detailed evaluation framework that includes access layer benchmarking and end-to-end application validation, presenting the first comprehensive comparison between SLE and traditional Bluetooth technologies. Benchmarking reveals SLE offers a 4\u00d7 increase in data rate, a 3.84\u00d7 reduction in latency, and a 10 dB improvement in sensitivity. To evaluate SLE against actual application QoS requirements, we implement an end-to-end evaluation system for validation across three practical application scenarios. Based on experimentation and parameter analysis, we propose a design for QoS-centered optimization. These results underscore SLE\u2019s fundamental advancements over Bluetooth and its potential in real-world applications, offering insights for further optimization of this communication technology.<\/jats:p>","DOI":"10.1145\/3776559","type":"journal-article","created":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T07:07:15Z","timestamp":1762931235000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Unveiling SparkLink Low Energy: A Comparative Measurement Study"],"prefix":"10.1145","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-0389-5020","authenticated-orcid":false,"given":"Boya","family":"Liu","sequence":"first","affiliation":[{"name":"The Hong Kong University of Science and Technology","place":["Hong Kong, Hong Kong"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-0037-3672","authenticated-orcid":false,"given":"Zhenyu","family":"Ren","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology","place":["Hong Kong, Hong Kong"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7975-7388","authenticated-orcid":false,"given":"Yanbo","family":"Zhang","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology","place":["Hong Kong, Hong Kong"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6047-9709","authenticated-orcid":false,"given":"Mo","family":"Li","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology","place":["Hong Kong, Hong Kong"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1881-4294","authenticated-orcid":false,"given":"Jiaxin","family":"Liang","sequence":"additional","affiliation":[{"name":"Huawei Technologies Co Ltd","place":["Shenzhen, China"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5048-8583","authenticated-orcid":false,"given":"Bin","family":"He","sequence":"additional","affiliation":[{"name":"Huawei Technologies Co Ltd","place":["Shenzhen, China"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3082-5478","authenticated-orcid":false,"given":"Jie","family":"Li","sequence":"additional","affiliation":[{"name":"Huawei Technologies Co Ltd","place":["Shenzhen, China"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-7704-5116","authenticated-orcid":false,"given":"Hao","family":"Wu","sequence":"additional","affiliation":[{"name":"Huawei Technologies Co Ltd","place":["Shenzhen, China"]}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-4781-1876","authenticated-orcid":false,"given":"Jingbin","family":"Zhou","sequence":"additional","affiliation":[{"name":"Huawei Technologies Co Ltd","place":["Shenzhen, China"]}]}],"member":"320","published-online":{"date-parts":[[2026,1,29]]},"reference":[{"key":"e_1_3_2_2_2","unstructured":"Sparklink Alliance. 2022. 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