Patents Assigned to Mavenir Systems, Inc.
  • Patent number: 11323410
    Abstract: When a user equipment (UE) provides a new request to a serving gateway (S GW), the S GW augments domain name system (DNS) requests and provides them to a public DNS, with the augmentation providing indications of the requested function. The public DNS responds by providing the IP address of a simplified packet data network (PDN) gateway (P GW) close to the UE location. The P GW forwards communications to the nearest instance of an endpoint providing the requested service or function. In embodiments, some of the functions of the P GW are shifted to other devices in the mobile core, devices that are already local. The simplification of the P GW allows the P GW to be virtualized and moved to a general-purpose server location. Existing information present in the data path is used to provide encryption of portions of the General Packet Radio Services (GPRS) Tunneling Protocol (GTP) connection, allowing the location of the P GW to be optimized in a virtual server data center, as the data path is now secure.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 3, 2022
    Assignee: Mavenir Systems, Inc.
    Inventor: Nishi Kant
  • Publication number: 20220131907
    Abstract: A method of call handling when multiple namespaces are present for a call of a priority or emergency call type initiated by a subscriber of a wireless network includes: obtaining, by an originating Proxy Call Session Control Function (P-CSCF), a predetermined precedence order for the multiple namespaces; retrieving, by the originating P-CSCF, each namespace and associated priority from the subscriber's Registration Context; inserting, by the originating P-CSCF, a SIP Resource-Priority header for each namespace and associated priority; and inserting, by the originating P-CSCF, an additional SIP Resource-Priority header with an additional specified namespace (Multiple Namespace Precedence Order (MNPO)) and priority value identifying the predetermined precedence order for the multiple namespaces.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 28, 2022
    Applicant: MAVENIR SYSTEMS INC.
    Inventors: Rick Bianconi, Suprabhat Chatterjee
  • Publication number: 20220030512
    Abstract: A method of enabling a Cloud Radio Access Network (C-RAN)-compatible central unit (CU) to modify at least one dynamic Transport Network Layer Association (TNLA) in communication with a C-RAN-compatible distributed unit (DU) includes: generating, by the CU, a first TNLA distinct from an existing second TNLA; communicating, by the CU to the DU, assigned first and second weight factors associated with the first and second TNLAs, respectively, wherein i) the assigned first weight factor associated with the first TNLA indicates required selection, and ii) the assigned second weight factor for the second TNLA indicates required non-selection; establishing a new Stream Control Transport Protocol (SCTP) connection towards a gNB-CU IP address associated with the first TNLA; and automatically selecting, by the DU, the first TNLA for any new UE requiring service. The method can be performed using one of F1-C interface, Xn-C interface and E1 interface.
    Type: Application
    Filed: July 22, 2021
    Publication date: January 27, 2022
    Applicant: Mavenir Systems, Inc.
    Inventor: Srinivasan Sundararajan
  • Publication number: 20220014326
    Abstract: A method of enabling enhanced Management Plane functions on the fronthaul interface between Open Radio Access Network Radio Unit (O-RU) and O-RAN Distributed Unit (O-DU) includes: identifying four subfields within 16-bit Extended Antenna Carrier Id (Eaxc-ID) field using a first set of four specified bitmasks including DU_Port_ID bitmask, BandSector_ID bitmask, CC_ID bitmask, and RU_Port_ID bitmask; and providing a second set of specified bitmasks including at least one of band-bitmask, sector-bitmask, channel-type-bitmask, and layer-antenna-port-bitmask, wherein: i) band bitmask defines which bits within the BandSector_ID bitmask subfield are used to indicate band; ii) sector bitmask defines which bits within the BandSector_ID bitmask subfield are used to indicate sector-id; iii) channel-type bitmask defines which bits within the RU_Port_ID bitmask subfield are used to indicate channel type; and iv) layer-antenna-port bitmask defines which bits within the RU_Port_ID bitmask subfield are used to indicate one o
    Type: Application
    Filed: June 17, 2021
    Publication date: January 13, 2022
    Applicant: Mavenir Systems, Inc.
    Inventors: Charles Santhosam Lourdu Raja, Ankit Kumar Agarwal, Somashekar Mudaraddi
  • Publication number: 20210385686
    Abstract: There is provided a method of operating an Open Radio Access Network (O-RAN) having an O-RAN radio unit (O-RU) and an O-RU controller. The method includes sending, from the O-RU to the O-RU controller, (i) a message informing that the O-RU supports a feature such as (a) a plurality of delay management profiles, and/or (b) a plurality of transmission window sizes, and (ii) a report of capabilities of the O-RU, where the report includes a parameter such as (a) a quantity of supported delay management profiles, (b) supported window sizes for each of the plurality of delay management profiles, and/or (c) a supported window offset for each of the plurality of delay management profiles. The O-RU controller configures the O-RU based on the feature and the parameter.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 9, 2021
    Applicant: Mavenir Systems, Inc.
    Inventors: Wessam Afifi Ahmed, Young-Han Nam, Sridhar Rajagopal, Rasiklal Kachhla
  • Publication number: 20210306039
    Abstract: There is provided a technique of decoding an uplink in a multiple input multiple output wireless communication system in an open radio access network having an open distributed unit (O-DU) and an open radio unit (O-RU). The O-DU (a) constructs a combining matrix for a resource block, and (b) sends the combining matrix to the O-RU. The O-RU (a) utilizes the combining matrix to compress signals on NR antennas per subcarrier into M values, where NR is a number of antennas, and M is less than NR, and (b) sends the M values per subcarrier to the O-DU.
    Type: Application
    Filed: March 26, 2021
    Publication date: September 30, 2021
    Applicant: MAVENIR SYSTEMS, INC.
    Inventors: Logeshwaran Vijayan, Karthik Muralidhar
  • Patent number: 10932166
    Abstract: Use of available bits in the TEID field of the GTP header to hold information needed to recreate at least a partial state of the session, enough for it to be routed, without waiting for a full state update. The GTP PDU contains the IP Payload with the source and destination IP addresses. The embodiments use that information and the coded TEID bits to provide sufficient routing information so that the packet can be routed without the full state. The TEID is coded to include bits identifying the APN and bits identifying the QCI of the session. A bit can be used to indicate drop if the full state not available. The remaining bits are used to identify unique user sessions. Some of the TEID bits can be encoded with the charging ID. Because sufficient routing information is provided in each packet, a backup gateway does not need to checkpoint.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: February 23, 2021
    Assignee: Mavenir Systems, Inc.
    Inventors: Nishi Kant, Ajaypal Singh, Sudhagar Chinnaswamy
  • Patent number: 10873851
    Abstract: Each UE in a mobile data network is assigned two different addresses, one a common IP address used downstream of the P-GW and the other a new IP address used upstream with the router and unique to the data processing node. The node changes the IP address of the UE in either direction as a packet passes through the P-GW. The use of an IP range unique to each node or data processing unit allows the upstream router to route downlink packets directly to the node containing the UE context, so that forwarding of packets between nodes is greatly reduced, if not eliminated. By getting rid of this inter-node forwarding, the data plane can scale to much greater limits.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: December 22, 2020
    Assignee: Mavenir Systems, Inc.
    Inventors: Amit Chawre, Himanshu Rakshit
  • Publication number: 20200092714
    Abstract: Each UE in a mobile data network is assigned two different addresses, one a common IP address used downstream of the P-GW and the other a new IP address used upstream with the router and unique to the data processing node. The node changes the IP address of the UE in either direction as a packet passes through the P-GW. The use of an IP range unique to each node or data processing unit allows the upstream router to route downlink packets directly to the node containing the UE context, so that forwarding of packets between nodes is greatly reduced, if not eliminated. By getting rid of this inter-node forwarding, the data plane can scale to much greater limits.
    Type: Application
    Filed: January 5, 2018
    Publication date: March 19, 2020
    Applicant: MAVENIR SYSTEMS, INC.
    Inventors: Amit CHAWRE, Himanshu RAKSHIT
  • Patent number: 10506467
    Abstract: An intelligent system and a method in a packet network to utilize the radio network resource and the core network resource in an optimized way so that more high priority, critical devices are granted access to the network while throttling the low priority, non-critical devices with the same given resource. The system collects all the necessary information from the signaling exchange between the radio access network and the core network and takes the device subscription characteristics and statically or dynamically defined throttling behavior rules into consideration to choose the optimal behavior to handle the requests from devices at any given time including deciding to reject the requests for certain types of devices under certain network conditions while granting the requests for other types of devices.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 10, 2019
    Assignee: Mavenir Systems, Inc.
    Inventors: Heeseon Lim, Nishi Kant
  • Publication number: 20190223062
    Abstract: Use of available bits in the TEID field of the GTP header to hold information needed to recreate at least a partial state of the session, enough for it to be routed, without waiting for a full state update. The GTP PDU contains the IP Payload with the source and destination IP addresses. The embodiments use that information and the coded TEID bits to provide sufficient routing information so that the packet can be routed without the full state. The TEID is coded to include bits identifying the APN and bits identifying the QCI of the session. A bit can be used to indicate drop if the full state not available. The remaining bits are used to identify unique user sessions. Some of the TEID bits can be encoded with the charging ID. Because sufficient routing information is provided in each packet, a backup gateway does not need to checkpoint.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Applicant: MAVENIR SYSTEMS, INC.
    Inventors: Nishi KANT, Ajaypal SINGH, Sudhagar CHINNASWAMY
  • Patent number: 10341906
    Abstract: A method of performing CSFB in an IMS comprises receiving, at a TAS, an incoming voice call for a UE attached to an EPS; paging the UE by the first ICS GW; receiving, by a second ICS GW associated with a second CS RAN currently connected to the UE, a Location Update message from the UE, the Location Update message containing a first CSFB indicator; transmitting, by the second ICS GW, a Registration message to the TAS, the Registration message containing a second CSFB indicator in response to the first CSFB indicator in the Location Update message; transmitting, by the TAS, a Cancel message to the first ICS GW; and transmitting, by the TAS, an Invite message to the second ICS GW to complete the voice call with the UE.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: July 2, 2019
    Assignee: Mavenir Systems, Inc.
    Inventors: Michael Brett Wallis, Dan Chen
  • Patent number: 10327137
    Abstract: The solution introduces a method and system in a network node of a telecommunication network such as the MME. The method includes receiving, from an eNodeB, an attach request that originated from a UE, the attach request including an identifier associated with a subscriber of the UE; checking a UE blacklist to determine whether the identifier in the attach request is on the UE blacklist; in response to the UE identifier being on the UE blacklist: rejecting the attach request; updating a success rate metric to reflect the failed attach request; comparing the success rate metric to a threshold; and in response to a decrease in the success rate metric below the threshold, recognizing a malicious attack and taking mitigating steps.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: June 18, 2019
    Assignee: Mavenir Systems, Inc.
    Inventors: Carlos Molina, Ravi Danda, Dipankar Bhattacharyya
  • Patent number: 10225232
    Abstract: A system and an algorithm in a mobile core network to distribute the data load across multiple data processing entities. The system is seen as having one data plane entity to the external entities like routers; hence the system can scale without needing to update the external nodes. In general when a data plane processing entity is added or removed, a new distribution rule is provided to the remaining data plane processing entities. Only after some number of sessions have been migrated does the new distribution get provided to the data distribution entities. This delay allows sufficient sessions to be migrated to minimize the overall number of packets that have to be forwarded for processing. This benefit can be maximized by taking advantage of cellular network's idle mode behavior and by migrating the sessions while they are in idle mode.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: March 5, 2019
    Assignee: Mavenir Systems, Inc.
    Inventor: Nishi Kant
  • Patent number: 10212192
    Abstract: Systems and methods are provided for facilitating communications with an operating system suspended OTT application on a user device. The methods include sending, from a P-CSCF or a WebRTC Gateway, to a push notification framework, a notification configured to cause the push notification framework to send a push notification to the suspended OTT application (IMS OTT application or WebRTC OTT application). The push notification may wake up the OTT application and cause a notification initiated REGISTRATION request to be sent by the OTT application. This can be initiated just before the IMS core network de-registers the OTT application based on a timer, or based on receipt of a SIP request (e.g. phone call received) when the OTT application is suspended. In addition, the push notification provides a lightweight authentication at the P-CSCF instead of a full blown authentication at the usual place S-CSCF.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: February 19, 2019
    Assignee: Mavenir Systems, Inc.
    Inventor: Michael Brett Wallis
  • Patent number: 10171548
    Abstract: A gateway system employing a redirect mechanism at upper layer protocols over Transmission Control Protocol (TCP) in a packet network to circumvent problems related to alteration of TCP sequence number due to header enrichment. The gateway system increases the size of a redirect message by the size of the header enrichment and thereby brings TCP sequence number on both ends in sync despite adding the header enrichment information.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: January 1, 2019
    Assignee: Mavenir Systems, Inc.
    Inventor: Nishi Kant
  • Patent number: 10064146
    Abstract: A system, method, and network node for synchronizing supplementary services settings between a database in a circuit-switched network and a database in a packet-switched network are disclosed. An exemplary communication system synchronization node is configured to receive a message containing a change to a supplementary service setting associated with a user equipment (UE) connected to a circuit-switched (CS) network or a packet-switched (PS) network, and communicate the change to the supplementary service setting to one or both of the HLR and the HSS, so that the supplementary service settings in both the HLR and the HSS are updated to reflect the change to the supplementary service setting.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: August 28, 2018
    Assignee: Mavenir Systems, Inc.
    Inventors: Ghassan Naim, Anish Sharma, Bejoy Pankajakshan
  • Patent number: 10028175
    Abstract: Communication systems and methods suitable for use in a Multiple Line Multiple Device service environment, involving a native line and a second shared line, are disclosed. Logic at one or more nodes and application servers is configured to ensure that network handover data, or other information, is only updated for the native line registration but not the shared line. Then when a call is placed or received on the shared line, the call is anchored to the native line based on that network handover data. If, during that call, a request is received to handover the call from a first network having a first communication protocol to a second network having a second communication protocol, the handover occurs based on the anchored native line. In one example embodiment the first network is a Packet Switched network and the second network is a Circuit Switched network.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: July 17, 2018
    Assignee: Mavenir System, Inc.
    Inventors: Anish Sharma, Michael Brett Wallis, Bejoy Pankajakshan
  • Patent number: 10021560
    Abstract: A mechanism to allow provisioning and use of BYOD (Bring Your Own Device) for authorized access in the enterprise network through a 3G/4G/Wi-Fi access network is provided. A brokering entity in the mobile packet core is provisioned for each authorized employee with enterprise specific rules for security and steering of user traffic. An Enterprise Container is defined as entity on the User Equipment that is self-contained virtual machine with enterprise sanctioned applications. An intelligent mechanism for and steering of signaling and traffic from such BYOD devices to the brokering entity is defined. At any time by using the personal container or the default behavior of the user equipment the user can get mobile service as if the Enterprise Container did not exist. Further, when such employment relationship is terminated the user's BYOD needs to be restored to its pre-employment functionality.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 10, 2018
    Assignee: Mavenir Systems, Inc.
    Inventors: Nishi Kant, Heeseon Lim
  • Patent number: 10004003
    Abstract: A method for switch user equipment from a Long Term Evolution system to a Circuit Switched system when receiving a voice call is disclosed. The method may comprise: receiving, at an IWF (Internet Working Function) network node, a Mobility Application Part Unstructured Supplementary Service Data (MAP USSD) message identifying a User Equipment (UE) originated from a USSD application, the UE associated with a first Mobile Switching Center (MSC); initiating Circuit Switched Fallback (CSFB) by sending a paging request to the UE; receiving a Cancel Location message associated with the UE from a Home Location Register (HLR) indicative of the UE being associated with a second MSC; forwarding the MAP USSD message to the UE via the HLR and the second MSC; receiving a MAP USSD response message from the UE via the HLR; and forwarding the MAP USSD response message to the USSD application.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: June 19, 2018
    Assignee: Mavenir Systems, Inc.
    Inventors: Michael Brett Wallis, Anish Sharma