Patents by Inventor Rajarajan Sivaraj

Rajarajan Sivaraj has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12349158
    Abstract: A wireless communications system includes radio components (O-RU, O-DU, O-CU), an ORAN Non-Real-Time RAN Intelligent Controller (Non-RT RIC) framework, an O-RU Controller and a CBSD Controller interfacing with a Spectrum Access System (SAS) using the Wireless Innovation Forum (WINNF) CBSD-SAS Interface. An example of CBSD Controller is a Domain Proxy (DP) defined by WINNF. The CBSD Controller is disclosed as an application belonging to the Non-RT RIC. This application could be an rApp. The Non RT MC Framework operates as a broker to route information between the O-RU Controller and the CBSD Controller. Data types are defined to be exchanged over the R1 interface.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: July 1, 2025
    Assignee: Mavenir Systems, Inc.
    Inventors: Ana Lucia Pinheiro, Rangsan Leelahakriengkrai, Wessam Afifi Ahmed, Rasiklal Kachhla, Neil Philip Piercy, Prateek Bidwalkar, Peter McCann, Rajarajan Sivaraj
  • Publication number: 20250106722
    Abstract: A method of implementing an optimal handover of a user equipment (UE) in an Open Radio Access Network (O-RAN) system from a first serving cell subject to a shutdown to an optimal target cell for the UE before executing the shutdown includes: providing an event trigger style for an event trigger used to trigger an event in an E2 node of the O-RAN system when a configuration change is ongoing within the E2 node, wherein the event trigger style is provided as radio intelligent controller (RIC) Event Trigger Definition information element (IE) Style Type 5; sending the event trigger from the E2 node to a near-real time (near-RT) RIC; and sending, by the near-RT RIC, a control message to the E2 node to implement the optimal handover of the UE to the optimal target cell for the UE.
    Type: Application
    Filed: September 20, 2024
    Publication date: March 27, 2025
    Applicant: Mavenir Systems, Inc.
    Inventor: Rajarajan Sivaraj
  • Publication number: 20250094254
    Abstract: A method for providing generic information encoding for RAN OAM-related data by providing semantics of RAN OAM data including CM/PM/Trace data and a generic information encoding model using Information Elements (IE) and/or IE structures that leverage the RAN semantics for encoding RAN OAM-related data using common message structures to encode any number of OAM-related RAN parameters, nested in hierarchical RAN structures to any depths enabling an R1 data consumer via a data customer computer to discover data capabilities of an R1 data producer that produces the RAN OAM-related data over an O-RAN-standardized R1 interface between rApps and Non-RT RIC/SMO platform functions.
    Type: Application
    Filed: September 13, 2024
    Publication date: March 20, 2025
    Applicant: Mavenir Systems, Inc.
    Inventor: Rajarajan Sivaraj
  • Publication number: 20240297767
    Abstract: Described are systems and methods for a cellular communication. These include a group of gNBs, DUs, and CUs, each with multiple sectors, communicating with a set of UEs; each CU/DU/gNB being configured to operate in a separate server or a same server, and each CU/DU/gNB being configured to be physically located at a same place or different places; each of the set of UEs comprising a plurality of SCELLs running in different DUs, whereby a pDU MAC (PCELL MAC) module is configured to operate in one DU and a sDU MAC (SCELL MAC) module is configured to operate in a different one of the DUs; an a MAC module in each DU is configured to exchange a message with a peer DU MAC module for a seamless data transfer for supporting inter DU/vDU carrier aggregation for a UE of the set of UEs.
    Type: Application
    Filed: February 29, 2024
    Publication date: September 5, 2024
    Applicant: MAVENIR SYSTEMS, INC.
    Inventors: Sapna Sangal, Charles Santhosam Lourdu Raja, Rajarajan Sivaraj
  • Patent number: 11917521
    Abstract: A method of uniquely identifying a user equipment (UE) connected to a radio access network (RAN) includes: providing a radio access network intelligent controller (RIC) component associated with the RAN; configuring, by a packet data convergence protocol (PDCP) layer, a default data radio bearer (DRB) for the UE to maintain Internet Protocol (I) Protocol Data Unit (PDU) connectivity with the RAN; and using, by the RIC, one of NG uplink (UL) user plane (UP) Transport Layer Information or S1 UL UP Transport Layer Information of the default DRB for uniquely identifying the UE for the entire time the UE is connected to the RAN. The unique identification for the UE is retained across at least one of i) multiple connectivity sessions for the UE, ii) multiple mobility sessions for the UE, and iii) multiple context sessions for the UE.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: February 27, 2024
    Assignee: Mavenir Systems, Inc.
    Inventors: Rajarajan Sivaraj, Peter McCann, Kuntal Chowdhury
  • Publication number: 20230319662
    Abstract: A method of optimizing traffic steering (TS) radio resource management (RRM) decisions for handover of individual user equipment (UE) in Open Radio Access Network (O-RAN) includes: providing an O-RAN-compliant near real time RAN intelligent controller (near-RT RIC) configured to interact with O-RAN nodes; and utilizing an artificial intelligence (AO-based TS application xApp in the near-RT RIC to optimize TS handover control and maximize UE throughput utility. The TS xApp is configured utilizing a virtualized and simulated environment for O-RAN, which virtualized and simulated environment for O-RAN is provided by ns-O-RAN platform. The optimization problem to be solved is formulated as a Markov Decision Process (MDP), and a solution to the optimization problem is derived by using at least one reinforcement learning (RL) technique.
    Type: Application
    Filed: March 29, 2023
    Publication date: October 5, 2023
    Applicant: Mavenir Systems, Inc.
    Inventors: Rajarajan Sivaraj, Rahul Soundrarajan, Pankaj Kenjale, Ankith Gujar, Tarunjeet Singh, Wasi Asghar
  • Publication number: 20230224254
    Abstract: The technologies described herein are generally directed to modeling radio wave propagation in a fifth generation (5G) network or other next generation networks. For example, a method described herein can include, for a network application, identifying, by a system comprising a processor, a characteristic value of a performance characteristic associated with an uplink connection enabled via a network of a user equipment to application server equipment hosting the network application. The method can further include, based on the characteristic value and a criterion, selecting, by the system, a first packet size for the uplink connection. The method can further include communicating, by the system, to the user equipment, the first packet size for use with the uplink connection.
    Type: Application
    Filed: March 21, 2023
    Publication date: July 13, 2023
    Inventors: Rajarajan Sivaraj, Kittipat Apicharttrisorn, Bharath Balasubramanian, Rittwik Jana, Subhabrata Sen, Dhruv Gupta, Jin Wang
  • Patent number: 11627092
    Abstract: The technologies described herein are generally directed to modeling radio wave propagation in a fifth generation (5G) network or other next generation networks. For example, a method described herein can include, for a network application, identifying, by a system comprising a processor, a characteristic value of a performance characteristic associated with an uplink connection enabled via a network of a user equipment to application server equipment hosting the network application. The method can further include, based on the characteristic value and a criterion, selecting, by the system, a first packet size for the uplink connection. The method can further include communicating, by the system, to the user equipment, the first packet size for use with the uplink connection.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: April 11, 2023
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Rajarajan Sivaraj, Kittipat Apicharttrisorn, Bharath Balasubramanian, Rittwik Jana, Subhabrata Sen, Dhruv Gupta, Jin Wang
  • Publication number: 20230055590
    Abstract: A method of generic encoding of a radio access network (RAN) parameter exchanged over E2 application protocol (E2AP) between an Open Radio Access Network (O-RAN) node and a near-real time radio access network intelligent controller (near-RT RIC) includes: providing a generic encoding mechanism for a message structure containing at least one RAN parameter, wherein the generic encoding mechanism includes a first categorization of each RAN parameter exchanged between the O-RAN node and the near-RT RIC into one of ELEMENT type, STRUCTURE type or LIST type; wherein the ELEMENT type parameter is a singleton variable which does not have any other associated RAN parameter; the STRUCTURE type parameter is a sequence of RAN parameters in which each RAN parameter in the sequence can be one of the ELEMENT type parameter, another STRUCTURE type parameter, or the LIST type parameter; and the LIST type parameter is a list of STRUCTURE type parameters.
    Type: Application
    Filed: August 5, 2022
    Publication date: February 23, 2023
    Applicant: Mavenir Networks, Inc.
    Inventors: Rajarajan SIVARAJ, Peter McCANN
  • Publication number: 20230040563
    Abstract: A wireless communications system includes radio components (O-RU, O-DU, O-CU), an ORAN Non-Real-Time RAN Intelligent Controller (Non-RT RIC) framework, an O-RU Controller and a CBSD Controller interfacing with a Spectrum Access System (SAS) using the Wireless Innovation Forum (WINNF) CBSD-SAS Interface. An example of CBSD Controller is a Domain Proxy (DP) defined by WINNF. The CBSD Controller is disclosed as an application belonging to the Non-RT RIC. This application could be an rApp. The Non RT MC Framework operates as a broker to route information between the O-RU Controller and the CBSD Controller. Data types are defined to be exchanged over the R1 interface.
    Type: Application
    Filed: June 17, 2022
    Publication date: February 9, 2023
    Applicant: Mavenir Systems, Inc.
    Inventors: Ana Lucia Pinheiro, Rangsan Leelahakriengkrai, Wessam Afifi Ahmed, Rasiklal Kachhla, Neil Philip Piercy, Prateek Bidwalkar, Peter McCann, Rajarajan Sivaraj
  • Patent number: 11558276
    Abstract: The described technology is generally directed towards reducing latency in a wireless communications network. Radio access network latency data corresponding to a measured latency impact criterion is obtained by a network device of a wireless network. Based on the radio access network latency data, latency guidance data usable by the radio network device to achieve a reduction in communication latency that is experienced by a user equipment is predicted, e.g., by a learned model. The latency guidance data can be used to facilitate a reduction in the communication latency that is experienced by a user equipment.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: January 17, 2023
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rajarajan Sivaraj, Varun Gupta, Dhruv Gupta, Rittwik Jana, Jin Wang, Laurie Bigler, Weihua Ye, Zhengye Liu
  • Publication number: 20220417166
    Abstract: Optimal data packet size is identified to achieve a higher throughput a wireless communication network. For example, a system can comprise monitoring a transmit control protocol performance associated with a first transmission of data packets over a first duration of time, wherein a packet size of the data packets is a first data packet size, detecting that the transmit control protocol performance satisfies a function with respect to a threshold and in response to the detecting that transmit control protocol performance satisfies the function with respect to the first threshold, determining a second data packet size to use for a second transmission of the data packets over a second duration of time, transmitting a request to change the packet size of the data packets to the second data packet.
    Type: Application
    Filed: August 23, 2022
    Publication date: December 29, 2022
    Inventors: Rajarajan Sivaraj, Subhabrata Sen, Zhengye Liu, Jin Wang
  • Patent number: 11533524
    Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a transmission control protocol congestion window size that corresponds to a video chunk requested by the user equipment, and a radio access network throughput of a download of the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the transmission control protocol congestion window size, and the radio access network throughput. Other embodiments are disclosed.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: December 20, 2022
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rajarajan Sivaraj, Zhengye Liu, Jin Wang, Yali Liu
  • Patent number: 11451485
    Abstract: Various embodiments disclosed herein provide for identifying optimal data packet size to achieve a higher throughput a wireless communication network. According to some embodiments, a system can comprise monitoring a transmit control protocol performance associated with a first transmission of data packets over a first duration of time, wherein a packet size of the data packets is a first data packet size, detecting that the transmit control protocol performance satisfies a function with respect to a threshold and in response to the detecting that transmit control protocol performance satisfies the function with respect to the first threshold, determining a second data packet size to use for a second transmission of the data packets over a second duration of time, transmitting a request to change the packet size of the data packets to the second data packet.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 20, 2022
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Rajarajan Sivaraj, Subhabrata Sen, Zhengye Liu, Jin Wang
  • Publication number: 20220232452
    Abstract: A method of uniquely identifying a user equipment (UE) connected to a radio access network (RAN) includes: providing a radio access network intelligent controller (RIC) component associated with the RAN; configuring, by a packet data convergence protocol (PDCP) layer, a default data radio bearer (DRB) for the UE to maintain Internet Protocol (I) Protocol Data Unit (PDU) connectivity with the RAN; and using, by the RIC, one of NG uplink (UL) user plane (UP) Transport Layer Information or S1 UL UP Transport Layer Information of the default DRB for uniquely identifying the UE for the entire time the UE is connected to the RAN. The unique identification for the UE is retained across at least one of i) multiple connectivity sessions for the UE, ii) multiple mobility sessions for the UE, and iii) multiple context sessions for the UE.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 21, 2022
    Applicant: MAVENIR NETWORKS, INC.
    Inventors: Rajarajan SIVARAJ, Peter McCANN, Kuntal CHOWDHURY
  • Publication number: 20220174022
    Abstract: The technologies described herein are generally directed to modeling radio wave propagation in a fifth generation (5G) network or other next generation networks. For example, a method described herein can include, for a network application, identifying, by a system comprising a processor, a characteristic value of a performance characteristic associated with an uplink connection enabled via a network of a user equipment to application server equipment hosting the network application. The method can further include, based on the characteristic value and a criterion, selecting, by the system, a first packet size for the uplink connection. The method can further include communicating, by the system, to the user equipment, the first packet size for use with the uplink connection.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 2, 2022
    Inventors: Rajarajan Sivaraj, Kittipat Apicharttrisorn, Bharath Balasubramanian, Rittwik Jana, Subhabrata Sen, Dhruv Gupta, Jin Wang
  • Publication number: 20210377804
    Abstract: The described technology is generally directed towards network traffic splitting for dual connectivity user equipment. A network controller can monitor communications transmitted between radio access network node devices. The radio access network node devices can be associated with different generation communication protocols. The inter-node communications can be used assess relative performance of the radio access network node devices. For example, buffer growth rates can be estimated for the radio access network node devices, and buffer growth rates can be correlated with network node device performance. The relative performance of the radio access network node devices can then be used to adjust network traffic splits between the radio access network node devices.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Inventors: Rajarajan Sivaraj, Dhruv Gupta, Zhi Cui, Rittwik Jana, Nemmara Shankaranarayanan, Kaustubh Joshi, Sarat Puthenpura
  • Publication number: 20210368216
    Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a transmission control protocol congestion window size that corresponds to a video chunk requested by the user equipment, and a radio access network throughput of a download of the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the transmission control protocol congestion window size, and the radio access network throughput. Other embodiments are disclosed.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Rajarajan Sivaraj, Zhengye Liu, Jin Wang, Yali Liu
  • Publication number: 20210306278
    Abstract: Various embodiments disclosed herein provide for identifying optimal data packet size to achieve a higher throughput a wireless communication network. According to some embodiments, a system can comprise monitoring a transmit control protocol performance associated with a first transmission of data packets over a first duration of time, wherein a packet size of the data packets is a first data packet size, detecting that the transmit control protocol performance satisfies a function with respect to a threshold and in response to the detecting that transmit control protocol performance satisfies the function with respect to the first threshold, determining a second data packet size to use for a second transmission of the data packets over a second duration of time, transmitting a request to change the packet size of the data packets to the second data packet.
    Type: Application
    Filed: March 27, 2020
    Publication date: September 30, 2021
    Inventors: Rajarajan Sivaraj, Subhabrata Sen, Zhengye Liu, Jin Wang
  • Patent number: 11109079
    Abstract: Aspects of the subject disclosure may include, for example, a method including monitoring a video session to determine key performance indicators for cross-layer interactions between a network providing video session video data and user equipment receiving the video session video data, wherein the key performance indicators include a transmission control protocol congestion window size that corresponds to a video chunk requested by the user equipment, and a radio access network throughput of a download of the video chunk requested by the user equipment, and determining a quality of service for the user equipment during the video session according to a residual length of content in a playback buffer for the user equipment based on the transmission control protocol congestion window size, and the radio access network throughput. Other embodiments are disclosed.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: August 31, 2021
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Rajarajan Sivaraj, Zhengye Liu, Jin Wang, Yali Liu