Inventor · disambiguated record
Yigang Cai
Also filed as: CAI YIGANG
223 granted patents·112 pending applications·2,555 citations·filing 1999–2022
99Inventor score
Files withCAI YIGANG134ALCATEL LUCENT USA INC62LUCENT TECHNOLOGIES INC30ALCATEL LUCENT29NOKIA SOLUTIONS & NETWORKS OY22
Top patents by PatentIndex Score
335 records- 0199US8121624B2Message spoofing detection via validation of originating switchCAI YIGANG·Filed 2006·Granted Feb 21, 2012·222 cites·16 claims
- 0298US8483135B2Online charging for sessions that are transferred between network domainsCAI YIGANG·Filed 2008·Granted Jul 9, 2013·219 cites·20 claims
- 0398US8347362B2Usage control services performed in an end user deviceALCATEL LUCENT·Filed 2009·Granted Jan 1, 2013·187 cites·20 claims
- 0498US8131266B2Short message service communication securityCAI YIGANG·Filed 2008·Granted Mar 6, 2012·225 cites·17 claims
- 0598US8126123B2Pre-biller in internet protocol multimedia subsystem (IMS) charging gateway function (CGF)CAI YIGANG·Filed 2007·Granted Feb 28, 2012·261 cites·6 claims
- 0697US8090346B2Controlling a shutoff/restart of mobile virtual network operations prepaid servicesCAI YIGANG·Filed 2006·Granted Jan 3, 2012·95 cites·7 claims
- 0796US8175975B2IMS device operable for financial transaction authorization and ID cards displayCAI YIGANG·Filed 2008·Granted May 8, 2012·70 cites·20 claims
- 0896US7457609B2Methods and systems for controlling services provided to shared plan subscribersLUCENT TECHNOLOGIES INC·Filed 2005·Granted Nov 25, 2008·61 cites·12 claims
- 0995US9510173B2Filtering emergency broadcast messages that contain commercial contentALCATEL LUCENT USA INC·Filed 2015·Granted Nov 29, 2016·13 cites·18 claims
- 1095US8792857B2Notification of charging rate adjustments in regions of a mobile network to control bandwidth usage in the regionsCAI YIGANG·Filed 2009·Granted Jul 29, 2014·44 cites·18 claims
- 1194US10021570B1Prioritization of mobile networks for proximity servicesNOKIA TECHNOLOGIES OY·Filed 2017·Granted Jul 10, 2018·9 cites·18 claims
- 1294US9549360B2User equipment assisted handover in licensed and unlicensed frequency bandsKHAWER MOHAMMAD R·Filed 2015·Granted Jan 17, 2017·11 cites·16 claims
- 1394US8990322B2Archive control for text messagesCAI YIGANG·Filed 2011·Granted Mar 24, 2015·31 cites·10 claims
- 1493US9635636B1Location processing in a volte networkALCATEL LUCENT USA INC·Filed 2015·Granted Apr 25, 2017·11 cites·15 claims
- 1593US7912908B2Electronic message forwarding controlALCATEL LUCENT USA INC·Filed 2006·Granted Mar 22, 2011·30 cites·17 claims
- 1692US9924370B2Policy control for transmissions on the unlicensed spectrumALCATEL LUCENT USA INC·Filed 2016·Granted Mar 20, 2018·8 cites·26 claims
- 1792US8254541B2Validating caller ID information to protect against caller ID spoofingCAI YIGANG·Filed 2006·Granted Aug 28, 2012·26 cites·16 claims
- 1892US7940904B2Converged offline charging and online chargingALCATEL LUCENT USA INC·Filed 2005·Granted May 10, 2011·26 cites·10 claims
- 1991US9414338B2Notification of relay capabilities for UE-to-network relay functionsALCATEL LUCENT USA INC·Filed 2014·Granted Aug 9, 2016·11 cites·18 claims
- 2091US9240946B2Message restriction for diameter serversCAI YIGANG·Filed 2008·Granted Jan 19, 2016·23 cites·16 claims
- 2191US8819638B2Application protoyping suiteSHARMA ALOK·Filed 2011·Granted Aug 26, 2014·17 cites·27 claims
- 2291US8776011B2Method and apparatus for managing components of application enablement suiteSHARMA ALOK·Filed 2011·Granted Jul 8, 2014·15 cites·21 claims
- 2391US8271007B2Managing SMS spoofing using SMPP protocolCAI YIGANG·Filed 2010·Granted Sep 18, 2012·18 cites·20 claims
- 2491US8175575B2Online charging for roaming users in a proxy online charging system of a visited networkCAI YIGANG·Filed 2008·Granted May 8, 2012·20 cites·18 claims
- 2589US7962120B2Allocation of internet protocol (IP) multimedia subsystem (IMS) chargesALCATEL LUCENT USA INC·Filed 2006·Granted Jun 14, 2011·20 cites·18 claims
- 2688US8265090B2Storing access network information for an IMS user in a subscriber profileCAI YIGANG·Filed 2007·Granted Sep 11, 2012·14 cites·14 claims
- 2788US8116728B2Charging in LTE/EPC communication networksCAI YIGANG·Filed 2008·Granted Feb 14, 2012·16 cites·20 claims
- 2886US8990586B2Method for selectively exposing subscriber dataSHARMA ALOK·Filed 2011·Granted Mar 24, 2015·8 cites·21 claims
- 2985US9602677B2Charging for commercial group based messagingALCATEL LUCENT USA INC·Filed 2015·Granted Mar 21, 2017·4 cites·20 claims
- 3085US8165561B2IMS networks providing business-related content to wireless devicesCAI YIGANG·Filed 2007·Granted Apr 24, 2012·13 cites·20 claims
- 3185US7620384B2Converged service control for IMS networks and legacy networksALCATEL LUCENT USA INC·Filed 2006·Granted Nov 17, 2009·16 cites·20 claims
- 3284US11553348B2Authorization of applications for direct discoveryNOKIA TECHNOLOGIES OY·Filed 2017·Granted Jan 10, 2023·4 cites·20 claims
- 3384US8605874B2Per-session dynamic charging caps in communication networksCAI YIGANG·Filed 2012·Granted Dec 10, 2013·4 cites·20 claims
- 3484US8438231B2Telecommunication messaging through a social networking serviceCAI YIGANG·Filed 2010·Granted May 7, 2013·8 cites·20 claims
- 3584US8126124B2Charging for long duration sessions in communication networksCAI YIGANG·Filed 2007·Granted Feb 28, 2012·9 cites·21 claims
- 3684US7877487B2Dynamic service triggers in communication networksALCATEL LUCENT USA INC·Filed 2006·Granted Jan 25, 2011·14 cites·20 claims
- 3783US9100381B2Method and apparatus for providing virtual Wi-Fi accessCAI YIGANG·Filed 2008·Granted Aug 4, 2015·10 cites·8 claims
- 3883US8412240B2Direct SMS message delivery over broadband data networks through an SMS-CBHATT JAY·Filed 2009·Granted Apr 2, 2013·11 cites·16 claims
- 3983US8046381B2IMS network access using legacy devicesALCATEL LUCENT·Filed 2005·Granted Oct 25, 2011·25 cites·20 claims
- 4083US8023926B2Offline charging for sessions over a 3GPP network and a WLAN access networkALCATEL LUCENT·Filed 2008·Granted Sep 20, 2011·9 cites·20 claims
- 4183US7454200B2Personal handyphone system component employment of prepay telephone service system component to allow user employment of wireless telephone service subsequent to purchase thereofLUCENT TECHNOLOGIES INC·Filed 2002·Granted Nov 18, 2008·51 cites·19 claims
- 4282US6590970B1Intelligent-networked telephone system having advertisement with bonus free phone call serviceLUCENT TECHNOLOGIES INC·Filed 1999·Granted Jul 8, 2003·97 cites·16 claims
- 4381US9775018B2Offline charging for proximity servicesALCATEL LUCENT USA INC·Filed 2014·Granted Sep 26, 2017·5 cites·20 claims
- 4481US8737953B2Fault-resilient method of generating complete correlated IMS charging data recordsSHARMA RANJAN·Filed 2009·Granted May 27, 2014·8 cites·14 claims
- 4581US8189752B2Per-session dynamic charging caps in communication networksCAI YIGANG·Filed 2007·Granted May 29, 2012·7 cites·20 claims
- 4681US7945241B2Charging for roaming users in IMS networksALCATEL LUCENT USA INC·Filed 2007·Granted May 17, 2011·8 cites·12 claims
- 4781US7885661B2Systems and methods for mobile virtual network operator mobile to mobile serviceALCATEL LUCENT USA INC·Filed 2007·Granted Feb 8, 2011·8 cites·17 claims
- 4880US11963094B2Network slice selection in a network based on use caseNOKIA TECHNOLOGIES OY·Filed 2019·Granted Apr 16, 2024·3 cites·20 claims
- 4980US7640030B2SMPP message processing for SMS spam filteringALCATEL LUCENT USA INC·Filed 2006·Granted Dec 29, 2009·11 cites·18 claims
- 5080US6862342B1Intelligent-networked system with service for notifying and hearing selected E-mails via a public switched telephone networkLUCENT TECHNOLOGIES INC·Filed 2000·Granted Mar 1, 2005·18 cites·24 claims
Showing the top 50 of 335 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yigang Cai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →