Publications
Journal papers:
[J38] Y.-T. Wang, T.-Y. Lin, S.-I. Sou, L.-A. Chen, M.-H. Tsai, Y.-R. Chen and C.-H. Tu, "Markov Clustering-based Content Placement in Roadside-Unit Caching with Deadline Constraint," IEEE Transactions on Intelligent Transportation Systems, vol. 25, no. 9, pp. 11881-11892, Sept. 2024.
[J37] S.-H. Chen, S.-I. Sou* and H.-P. Hsieh, "Top-N Music Recommendation Framework for Precision and Novelty under Diversity Group Size and Similarity," Journal of Intelligent Information Systems, Vol. 62, pp, 1-26, Feb., 2024, https://doi.org/10.1007/s10844-023-00784-2.
[J36] F.-J. Wu, S.-W. Lai, and S.-I. Sou, “ViWise: Fusing Visual and Wireless Sensing Data for Trajectory Relationship Recognition”, ACM Transactions on Internet of Things, Vol. 4, No. 4, Article 23, Nov., 2023.
[J35] S. -I. Sou, F. -J. Wu and W. -C. Wu, "JoLo: Multi-device Joint Localization based on Wireless Data Fusion," IEEE Transactions on Mobile Computing, vol. 22, no. 7, pp. 4016-4031, 1 July 2023, doi: 10.1109/TMC.2022.3150758.
[J34] S.-I. Sou, N. Bhooanusas, Y.-B. Lin, and D.-J. Deng, "K-Test: An Analytical Model for Measurement-based Server Selection based on Response Time," IEEE Trans. Veh. Technol., vol. 72, no. 2, pp. 2338-2351, Feb. 2023.
[J33] Y.-P. Tuan, L.-A. Chen, T.-Y. Lin, T.-Y. Lin, Y.-T. Wang, S.-I. Sou and M.-H. Tsai, "Improving QoS Mechanisms for IEEE 802.11ax with Overlapping Basic Service Sets," Wireless Netw., vol. 29, pp. 387–401, 2023.
[J32] N. Bhooanusas and S.-I. Sou*, "Performance Modeling of Multipath Mobile Data Offloading in Cellular/WiFi Networks with Bandwidth Uncertainty ", Computer Networks, Volume 197, Oct, 2021.
[J31] F.-J. Wu, Y.-J. Chen and S.-I. Sou, "CoCo: Quantifying Correlations between Mobility Traces using Sensor Data from Smartphones," ACM Transactions on Internet of Things, Volume 2 Issue 3, Aug. 2021, Article No.: 20, pp 1–22, https://doi.org/10.1145/3457139
[J30] N. Bhooanusas, S.-I. Sou* and K.-C. Cheng, "Satisfaction-based Dynamic Bandwidth Reallocation for Multipath Mobile Data Offloading ", Computer Networks, Vol. 185, Feb. 2021.
[J29] B.-Y. Huang, Y. Lee and S.-I. Sou, "Joint Power Allocation for NOMA-based Diamond Relay Networks with and without Cooperation," IEEE Open Journal of the Communications Society, vol. 1, pp. 428-443, 2020 . (full-Text)
[J28] S.-I. Sou*, W.-H. Lin, K.-C. Lan and C.-S. Lin, "Indoor Location Learning over Wireless Fingerprinting System with Particle Markov Chain Model", IEEE Access, vol. 7, no. 1, pp. 8713-8725, Dec. 2019. (full-Text pdf)
[J27] C.-S. Lin and S.-I. Sou*, "QoS-Aware Dynamic Bandwidth Reallocation with Deadline Assurance for Multipath Data Offloading", Computer Networks, vol. 153, no. 22, pp. 103-112, Apr. 2019.
[J26] S.-I. Sou*, M.-R. Li, S.-H. Wang and M.-H. Tsai “File Distribution via Proximity Group Communications in LTE-Advanced Public Safety Networks,” Computer Networks, vol. 149, no. 11, pp. 93-101, Feb. 2019.
[25] Y.-T. Peng, S.-I. Sou*, M.-H. Tsai and C.-S. Lin, “Multipath Mobile Data Offloading of Deadline Assurance with Policy and Charging Control in Cellular/WiFi Networks,” Computer Networks, Vol. 129, Part 1, pp. 17-27, Dec. 2017.
[J24] S.-I. Sou* and Y.-T. Peng, “Performance Modeling for Multipath Mobile Data Offloading in Cellular/Wi-Fi Networks,” IEEE Trans. Commun., vol. 65, no. 9, pp. 3863-3875, Sept. 2017.
[J23] S.-I. Sou* and C.-S. Lin, “Random Packet Inspection Scheme for Network Intrusion Prevention in LTE Core Networks,” IEEE Trans. Veh. Technol., vol. 66, no. 9, pp. 8385-8397, Sept. 2017.
[J22] Y.-B. Lin, S.-I. Sou, and C.-L. Luo, “Transmission Policies for Multi-Segment Short Messages", IEEE Trans. Veh. Technol., vol. 65, no. 7, pp. 5749—5754, July, 2016.
[J21] S.-I. Sou*, and H.-Y. Hsieh, "Modeling Application-based Charging Management with Traffic Detection Function in 3GPP", Computer Networks, vol. 91, no. C, pp. 625-637, Nov. 2015.
[J20] S.-I. Sou*, and D.-R. Tsai, “Bulk credit reservation in event-based machine type communications for 3GPP online charging,” Computer Networks, vol. 75, pp. 75–85, Dec. 2014.
[J19] S.-I. Sou*, and S.-M. Wang, “Performance improvements of batch data model for machine-to-machine communications,” IEEE Commun. Lett., vol. 18, no. 10, pp.1775-1778, Oct. 2014.
[J18] S.-I. Sou*, and Y. Lee, “End-to-end performance for SCF-based vehicular routing over multiple communication gaps,” IEEE Commun. Lett., vol. 18, no. 6, pp.1015-1018, June 2014.
[J17] S.-Y. Tsai, S.-I. Sou, and M.-H. Tsai, “Reducing Energy Consumption by Data Aggregation in M2M Networks,” Wireless Personal Communication, vol. 74, no. 4, pp 1231-1244, Feb. 2014.
[J16] S.-I. Sou*, “Mobile data offloading with policy and charging control in 3GPP core network,” IEEE Trans. Veh. Technol, vol. 62, no. 7, pp. 3481--3486, Sep. 2013. (NSC 100-2221-E-006-200, and NSC 101-2221-E-006-216-)
[J15] S.-I. Sou*, “Advanced detection of selfish vehicles for local file sharing in sparse vehicular networks,” IEEE Commun. Lett, vol.17, no.5, pp.880-883, May 2013. (NSC 100-2221-E-006-200, and NSC 101-2221-E-006-216-)
[J14] S.-I. Sou*, “Modeling Emergency Messaging for Car Accident over Dichotomized Headway Model in Vehicular Ad-hoc Networks,” IEEE Trans. Commun., vol. 61, no. 2, pp. 802-812, Feb. 2013. (NSC 100-2221-E-006-200- and NSC 101-2221-E-006-216-)
[J13] S.-I. Sou*, and H.-F. Ho, “Modeling Session Completion in Sparse Vehicular Internet Access,” IEEE Commun. Lett., vol. 16, no. 2, pp. 161-163, Feb. 2012. (NSC 99-2221-E-006-122 and NSC 100-2221-E-006-200)
[J12] S.-I. Sou*, and C.-S. Lin, “SPR Proxy Mechanism for 3GPP Policy and Charging Control System,” Computer Networks, vol. 55, no. 17, pp. 3847-3862, Dec. 2011. (doi: 10.1016/j.comnet.2011.07.025)
[J11] S.-I. Sou*, and O. K. Tonguz, “Enhancing VANET connectivity through Roadside Units on Highways,” IEEE Trans. Veh. Technol., vol. 60, no. 8, pp. 3586-3602, Oct. 2011. (doi: 10.1109/TVT.2011.2165739)
[J10] S.-I. Sou*, J.-Y. Jeng, and P. Lin, “Improving Session Continuity through User Mobility Tracking for EPS Inter-Serving Gateway Handover,” Wireless Communications and Mobile Computing, vol. 12, no. 12, pp. 1077-1090, Aug. 2012. (NSC 98-2221-E-006 -095)
[J9] S.-I. Sou*, “A Power-Saving Model for Roadside Unit Deployment in Vehicular Networks,” IEEE Commun. Lett., vol. 14, no. 7, pp. 623-625, Jul. 2010. (NSC 98-2221-E-006 -095)
[J8] S.-I. Sou*, Y.-B. Lin and C.-L. Luo. “Cost Analysis of Short Message Retransmissions,” IEEE Trans. Mobile Comput., vol. 9, no. 2, pp. 215-225, Feb. 2010. (NSC 97-2218-E-006 -020)
[J7] Y. Lee*, M.-H. Tsai, and S.-I. Sou, “Performance of decode-and-forward cooperative communications with multiple dual-hop relays over Nakagami-m fading channels,” IEEE Trans. Wireless Commun., vol. 8, no. 6, pp. 2853-2859, Jun. 2009.
[J6] S.-I. Sou*, Y.-B. Lin and J.-Y. Jeng. “Reducing Credit Re-authorization Cost in UMTS Online Charging System,” IEEE Trans. Wireless Commun., vol. 7, no. 9, pp. 3629-3635, Nov. 2008.
[J5] S.-I. Sou and Y.-B. Lin. “Broadcast Approach for UMTS Mobility Database Recovery,” IEEE Trans. Mobile Comput., vol. 6, no. 8, pp. 865-871, Aug. 2007.
[J4] S.-I. Sou, H.-N. Hung, Y.-B. Lin, N.-F. Peng, and J.-Y. Jeng. “Modeling Credit Reservation Procedure for UMTS Online Charging System,” IEEE Trans. Wireless Commun., vol. 6, no. 11, pp. 4129-4135, Nov. 2007.
[J3] S.-I. Sou, Y.-B. Lin, Q. Wu and J.-Y. Jeng. “Modeling of Prepaid Mechanism of VoIP and Messaging Services for UMTS,” IEEE Trans. Veh. Technol., vol. 56, no. 3, pp. 1434-1441, May. 2007.
[J2] S.-I. Sou and Y.-B. Lin. “Modeling of Mobility Database Failure Restoration using Checkpoint Schemes,” IEEE Trans. Wireless Commun., vol. 6, no. 1, pp. 313-319, Jan. 2007.
[J1] H.-N. Hung, Y.-B. Lin, N.-F. Peng and S.-I. Sou. “Connection Failure Detection Mechanism of UMTS Charging Protocol,” IEEE Trans. Wireless Commun., vol. 5, no. 5, pp. 1180-1186, May 2006.
International conference papers:
[40] K.-C. Huang, S.-I. Sou, and F.-J. Wu, "Using Environmental Light and Wireless Signals for Enhanced Mobility Relationship Analysis," IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Valencia, Spain, Sep. 2024.
[39] S.-I. Sou, Y. Lee and, H.-T. Wu "Leveraging NOMA for Enhanced Uplink Throughput in Industrial Wireless Networks over 802.11 DCF" IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Valencia, Spain, Sep. 2024.
[38] Y. Lee, F.-J. Wu and S.-I. Sou, "Hybrid Approaches for Conversation Group Identification: Integrating Wireless, Audio, and Contextual Information," IEEE International Conference on Communications (ICC), Denver, USA, Jun. 2024.
[37] H.-W. Li, H.-P. Hsieh and S.-I. Sou, "Transient Group Recommendation for Shared Environment using Check-in and Tag Data," in 6th IEEE International Conference on Knowledge Innovation and Invention, Sapporo, Japan, Aug., 2023.
[36] S.-F. Chou, C.-Y. Yu, and S.-I. Sou, "Efficient Multi-UAV-Aided Communication Service Deployment in Disaster-Resilient Wireless Networks," IEEE Vehicular Networking Conference (VNC), Istanbul, Türkiye, 2023.
[35] B.-Y. Huang, S.-I. Sou, Y. Lee, and H.-T. Wu, “NOMA-D: Data setup for NOMA couple in random access for 802.11 networks,” in 2022 IEEE ICCE-Taiwan, Taipei, Taiwan, Jul. 2022.
[C34] S.-I. Sou, F.-J. Wu and S.-Y. Tsai, "ProTrack: Detecting Proximity and Trajectory from Passive Wireless Traces of Mobile Devices,” IEEE International Conference on Communications (ICC), Seoul, South Korea, May, 2022.
[C33] N. Bhooanusas and S.-I. Sou, “Measurement-Based IoT Server Selection for Mobile Edge Computing,” in the 22-nd The Asia-Pacific Network Operations and Management Symposium (APNOMS), Tainan, Taiwan, Sep. 2021.
[C32] S.-H. Chen, S.-I. Sou, and H-P Hsieh, "HPCF: Hybrid Music Group Recommendation System based on Item Popularity and Collaborative Filtering,” International Computer Symposium (ICS), Tainan, Taiwan, Dec., 2020.
[C31] H.-W. Li, S.-I. Sou, and H-P Hsieh, "Room-based Playlist Arrangement System using Group Recommendation,” International Computer Symposium (ICS), Tainan, Taiwan, Dec., 2020.
[C30] Y.-C. Wang, P.-L. Yang, S.-I. Sou, and H-P Hsieh, "The MuTube Dataset for Music Listening History Retrieval and Recommendation System,” International Computer Symposium (ICS), Tainan, Taiwan, Dec., 2020.
[C29] Y. Lee, B.-Y. Huang, and S.-I. Sou, "An Efficient Algorithm for Joint Power Allocation in NOMA-Based Diamond Relay Networks,” International Computer Symposium (ICS), Tainan, Taiwan, Dec., 2020.
[C28] S.-I. Sou, S.-H. Chen, H-W Li, P-L Yang and Y-C Wang, "Nearby x Music: A Mobile Social Service in Proximity Based on YouTube Hashtag and Playlist,” IEEE GCCE, Osaka, Japan, Oct. 2019. (Excellent Poster Award, Outstanding Prize; http://www.ieee-gcce.org/2019/awards.html )
[C27] T.-H. Chen, S.-I. Sou and Y. Lee, “WiTrack: Human-to-Human Mobility Relationship Tracking in Indoor Environments Based on Spatio-Temporal Wireless Signal Strength,” The 17th IEEE International Conference on Pervasive Intelligence and Computing (PICom 2019), Fukuoka, Japan, Aug. 2019.
[C26] S.-I. Sou, C.-L. Lou and Y. Lee, “Exploiting Spatial Locality for Content Placement in Roadside-Unit Caching with Delay Constraint ,” The 17th IEEE International Conference on Pervasive Intelligence and Computing (PICom 2019), Fukuoka, Japan, Aug. 2019.
[C25] Y. Lee and S.-I. Sou, “On Improving Gauss-Seidel Iteration for Signal Detection in Uplink Multiuser Massive MIMO Systems,” The 3rd International Conference on Computer and Communication Systems (ICCCS), Nagoya, Japan, Apr. 2018.
[C24] Y. Lee and S.-I. Sou,“Enhanced Frequency-Domain Signal Detection for Single-Carrier Spatial Modulation Systems,” The 3rd International Conference on Computer and Communication Systems (ICCCS), Nagoya, Japan, Apr. 2018.
[C23] C.-S. Lin and S.-I. Sou, “Deadline Assurance through Dynamic Bandwidth Reallocation in Multipath Mobile Data Offloading,” IEEE WCNC, Barcelona, Spain, Apr. 2018.
[C22] S.-I. Sou, and Y. Lee, “Trigger-based Approach with Hidden Node Problem for Uplink Multi-User Transmission in 802.11ax,” in IEEE 18th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Sapporo, Japan, July, 2017.
[C21] S.-I. Sou, Y.-T. Peng, M.-H. Tsai and Y. Lee, “Enabling Proximity Call Continuity via Common Neighbor Tunneling for Public Safety in LTE,” Proceeding of 2016 International Conference on Networking and Network Applications (NaNA'16), Hakodate, Japan, July 2016.
[C20] S.-I. Sou and C.-H. Wu, “On the Survivability of Broadcast-based Information Dissemination over Multi-intersections in Vehicular Networking,” International Conference on Information, Communications & Signal Processing (ICICS), Singapore, Dec., 2015.
[C19] S.-I. Sou and Y. Lee, “Segcast: Segment-based broadcasting for delay tolerant data dissemination in intermittent VANETs,” International Conference on Information, Communications & Signal Processing (ICICS), Singapore, Dec., 2015.
[C18] C.-S. Lin, and S.-I. Sou "Cost Analysis of Deep Packet Inspection in PCC Architecture," International Computer Symposium (ICS), Taichung, Taiwan, Dec., 2014.
[C17] Y.-J. Kuo, S.-I. Sou and Y. Lee, “Heuristic approach for subcarrier assignment in relay based femtocell with threshold constraint,” IEEE International Conference on Communication Systems (ICCS), Macau, China, Nov, 2014.
[C16] C.-Y. Hsiao, S.-I. Sou and C.-S. Lin, “Small scale tracking scheme for low mobility devices in machine type communications,” VTC Spring, Seoul, Korea, May, 2014.
[C15] T.-H. Hsu, S.-I. Sou and C.-S. Lin, “Architecture and Recipient Selection of Emergency Messaging for Ambulance Traveling,” VTC Spring, Seoul, Korea, May, 2014.
[C14] F.-Y. Lee, S.-I. Sou, P. Lin, “Social-Based Broadcasting for Delay Tolerant Network,” IEEE Wireless Communications and Networking Conference (WCNC), Shanghai, China, Apr., 2013.
[C13] S.-I. Sou, B.-J. Lin, Y. Lee, “A Probabilistic Approach for V2V Relay Contention based on Channel State Information,” IEEE Wireless Communications and Networking Conference (WCNC), Shanghai, China, Apr., 2013.
[C12] S.-Y. Tsai, S.-I. Sou, and M.-H. Tsai, “Effect of Data Aggregation in M2M Networks,” The 15th International Symposium on Wireless Personal Multimedia Communications (WPMC), Taipei, Taiwan, Sept., 2012. (best paper award)
[C11] S.-I. Sou, and Y. Lee, “SCB: Store-Carry-Broadcasting Scheme for Message Dissemination in Sparse VANET,” IEEE VTC Spring, Yokohama, Japan, May, 2012.
[C10] S.-I. Sou, P. Lin, S.-S. Chen and J.-Y. Jeng, “A Novel Multi-tariff Charging Method for Next Generation Multicast and Broadcast Service,” The 31st IEEE International Conference on Computer Communications (INFOCOM), Orlando, USA, Mar. 2012. (full paper).
[C9] W.-C. Shieh, S.-I. Sou, and S.-Y. Tsai, “A Study of Video Frame Sharing in Sparse Vehicular Networks,” The 17th IEEE International Conference on Parallel and Distributed Systems (ICPADS), Tainan, Taiwan, Dec. 2011.
[C8] S.-I. Sou, W.-C. Shieh, and Y. Lee, “A Video Frame Exchange Protocol with Selfishness Detection Mechanism under Sparse Infrastructure-based Deployment in VANET,” IEEE International Workshop on Selected Topics in Mobile and Wireless Computing (STWiMob), Shanghai, China, Oct., 2011.
[C7] H-W Shieh, Y. Lee, and S.-I. Sou “Hybrid ZF-ML detection for N×N spatial multiplexing systems,” The 7th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Shanghai, China, pp. 327-332, Oct. 2011.
[C6] S.-I. Sou, C.-Y. Hsieh, F.-Y. Lee, Y.-F. Lin, J.-Y. Jeng, and C.-W. Cheng, “Design and Implementation of Dynamic Charging Plan for IMS-based Multicast Services,” The 13th Asia-Pacific Network Operations and Management Symposium (APNOMS), Taipei, Taiwan, Sept. 2011.
[C5] H.-F. Ho, S.-I. Sou, and J.-Y. Jeng, “Credit Allocation Schemes for Quality-class-oriented Services in Next Generation Networks,” International Computer Symposium (ICS), Tainan, Taiwan, Dec., 2010.
[C4] S.-I. Sou, H.-Y. Lee, C.-S. Lin, and C.-W. Cheng, “Design and Implementation of Policy and Charging Control System for Advanced Mobile Services,” The 7th International Conference on Information, Communications & Signal Processing (ICICS), Macau, Dec. 2009.
[C3] S.-I. Sou, J.-Y. Jeng, and Y. Lee, Signaling overhead of policy and online charging control for bearer sessions in LTE network,” The 13th IEEE International Symposium on Consumer Electronics (ISCE), Kyoto, Japan, pp. 593-597, May 2009.
[C2] S.-I. Sou, “Performance Analysis of Credit Re-authorization Schemes in UMTS Online Charging System,” ACM International Wireless Communications and Mobile Computing Conference (IWCMC), Hawaii, USA, Aug., 2007.
[C1] S.-I. Sou, Q. Wu, Y.-B. Lin and C.-H. Yeh, “Prepaid Mechanism of VoIP and Messaging Services,” IEEE International Conference on Information Technology Research and Education (ITRE), Hsinchu, Taiwan, 2005.
Local papers:
[L17] 陳亭翰、蘇淑茵, “與人同行: 實作無線偵測系統於跟蹤行為分析,” 臺灣電信年會之全國電信研討會, Taichung, Jan. 2019. (「網路應用創新類最佳論文獎」8/198=4%)
[L16] 黃柏穎、蘇淑茵、李彥文, “NOMA-C：非正交多重接取下行系統之運用通道相關性的使用者分組法,” The 22nd Mobile Computing Workshop, Kaohsiung, Aug. 2017. (最佳論文獎)
[L15] 林專勝、林文翔、陳亭翰、蘇淑茵, “基於低功耗藍牙技術之雲端緊急尋人系統,” The 21st Mobile Computing Workshop, Taichung, Aug. 2016.
[L14] 林專勝、蘇淑茵, “基於LTE ProSe技術之緊急尋人系統,” The 20th Mobile Computing Workshop, Nantou, Aug. 2015.
[L13] 王珊晦、李明儒、蘇淑茵、李彥文, “利用D2D提升LTE E-MBMS之傳輸效率,” The 20th Mobile Computing Workshop, Nantou, Aug. 2015.
[L12] 彭憶亭、蘇淑茵, “長程演進技術中鄰近服務與核心網路服務轉換之機制研究,” The 20th Mobile Computing Workshop, Nantou, Aug. 2015.
[L11] 黃建皓、蘇淑茵, “Implement N-Greedy w/ M-Direction-Greedy Forwarding in Vehicular ad hoc network,” The 19th Mobile Computing Workshop, Tainan, Aug. 2014.
[L10] 林專勝、蘇淑茵, “策略與計費控制系統之深度封包檢測成本與效能分析,” The 19th Mobile Computing Workshop, Tainan, Aug. 2014.
[L9] C.-S. Lin, H.-B. Huang, S.-I. Sou, Y. Lee, “Improving LTE Handover Performance with Data Forwarding Mechanism,” The 18th Mobile Computing Workshop, Taiwan, Aug. 2013.
[L8] 李翎嘉、陳彥勳、蘇淑茵, “使用WAP-Tree 於車流資料庫之路徑推薦系統設計, ”全國電信研討會,彰化, Nov, 2012.
[L7] 葉貫中、 蔡欣燁、 王俊翔、 蘇淑茵, “使用基因演算法於車載網路之路側單元佈署,” The 17th Mobile Computing Workshop, Taoyuan, Taiwan, Aug. 2012.
[L6] 蘇淑茵、林專勝、謝文程 、鄭枸澺、鄭建威、吳秉穎, “透過即時策略計費系統之IMS 話務控制,” 電信研究雙月刊, 第41 卷第2 期,2011年四月。
[L5] 謝文程、蘇淑茵, “應用於區域性車載網路之互助合作影片下載機制,” Proceedings of the Taiwan Academic Network Conference (TANET), Tainan, Taiwan, 2010.
[L4] 林專勝、謝文程、蕭鈞文、何秀芳、蘇淑茵, “具動態監控功能之策略與計費電信服務平台,” Proceedings of the Taiwan Academic Network Conference (TANET), Changhua, Taiwan, 2009.
[L3] 吳秉穎、蘇淑茵、李欣怡、鄭建威, “LTE和Non-3GPP 間遞移之效能改善,” Proceedings of the Taiwan Academic Network Conference (TANET), Changhua, Taiwan, 2009.
[L2] 蘇淑茵、鄭枸澺、林一平, “即時計費系統中點數保留程序之效能分析,”電信研究雙月刊, 第37 卷第5 期, 691-700頁, 2007.
[L1] S.-I. Sou, Q. Wu, Y.-B. Lin and W.-E. Chen, “SIP-based VoIP Prepaid System on NTP VoIP Platform,” Proceedings of the Taiwan Academic Network Conference (TANET), Taitung, Taiwan, 2004.
Other publications:
[B3] S.-Y. Tsai, S.-I. Sou, and M.-H. Tsai "Effect of Data Aggregation in M2M Networks" (Book chapter), Internet of Things and M2M Communications, The River Publishers Series in Information Science and Technology, May, 2013.
[B2] Y.-B. Lin and S.-I. Sou, Charging for Mobile All-IP Telecommunications, Wiley Publishing Co. in October, 2008. ISBN: 978-0-470-77565-3 (300 pages) November 2008. (Book)
[B1] S.-I. Sou, "IMS Charging Management in Mobile Telecommunication Networks" (Book chapter), VoIP Handbook: Applications, Technologies, Reliability, and Security, by Syed A. Ahson and Mohammad Ilyas (editor), CRC Press, 2008.
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