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ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2025,6,9]]},"abstract":"<jats:p>The utilization of wearable devices with integrated photoplethysmography (PPG) sensors for continuous and comfortable Arterial Blood Pressure (ABP) monitoring has gained popularity. However, our analysis on a large-scale self-collected dataset reveals a significant challenge: approximately 56.7% of individuals experience the absence of the dicrotic notch (a vital morphology feature) in wrist-PPG data, while 23.8% face the same issue in finger-PPG data, which poses a big obstacle to generalized ABP monitoring. To address this challenge, we propose a morphology-independent ABP estimation algorithm based on the Frank-Starling law. We also devise techniques to address calibration and PPG data drift issues commonly faced in continuous ABP monitoring. Further, a system called RingBP is developed towards continuous, comfortable, and generalized ABP monitoring using a smart ring. We design and implement a smart ring prototype and conduct extensive experiments involving 85 participants, demonstrating its superiority over other solutions.<\/jats:p>","DOI":"10.1145\/3731600","type":"journal-article","created":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T21:21:56Z","timestamp":1750281716000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["RingBP: Towards Continuous, Comfortable, and Generalized Blood Pressure Monitoring Using a Smart Ring"],"prefix":"10.1145","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5671-9637","authenticated-orcid":false,"given":"Guanzhou","family":"Zhu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7337-9168","authenticated-orcid":false,"given":"Dong","family":"Zhao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5396-3842","authenticated-orcid":false,"given":"Yixuan","family":"Song","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-8097-0640","authenticated-orcid":false,"given":"Zilong","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8785-3350","authenticated-orcid":false,"given":"Anfu","family":"Zhou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7199-5047","authenticated-orcid":false,"given":"Huadong","family":"Ma","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4252-7869","authenticated-orcid":false,"given":"Xiangbin","family":"Meng","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Peking University Third Hospital, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1556-9315","authenticated-orcid":false,"given":"Jingjia","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Peking University Third Hospital, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6366-1285","authenticated-orcid":false,"given":"Chunli","family":"Shao","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Peking University Third Hospital, Beijing, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-4579-4449","authenticated-orcid":false,"given":"Yida","family":"Tang","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Peking University Third Hospital, Beijing, China"}]}],"member":"320","published-online":{"date-parts":[[2025,6,18]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"2024. 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