Patents Assigned to Tejas Networks Limited
  • Patent number: 9674592
    Abstract: The present invention relates to passive optical network (PON), and in particular, to an optical network terminal (ONT) in the PON system. In one embodiment, the optical network terminal includes a first interface coupled to a communications network, a second interface coupled to a network client and a processor including a memory coupled to the first interface and to the second interface, wherein the processor is capable of converting optical signals to electric signals, such that the network client can access the communications network.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: June 6, 2017
    Assignee: Tejas Networks Limited
    Inventor: Govindan Kutty Thrithala
  • Patent number: 9672527
    Abstract: A method of managing bearer signalling for one or more user equipment (UE) coupled to eNodeB via at least one relay node, includes generating and sending MME Association Consolidation (MAC) request message by eNodeB to plurality of disparate mobility management entities managing plurality of UE coupled to said relay node based on receiving bearer resource request of UE coupled to said relay node. The method further includes receiving MAC response by eNodeB from plurality of disparate mobility management entities managing plurality of UE and forwarding to MME of said relay node, received MAC response by eNodeB. The method further includes provisioning by MME of said relay node bearer request of UE, based on received MAC response, and provisioning consequential bearer setup request of said relay node wherein, provisioning includes creating, updating, modifying and deleting bearers of UE and RN.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: June 6, 2017
    Assignee: Tejas Networks Limited
    Inventor: Vinod Kumar. M
  • Patent number: 9622127
    Abstract: A method and system for bandwidth allocation in a wireless communication system, by assigning at least one specific frequency, called hand-off frequency, to one or more base station called as hand-off base station (HBS) located within the service area, for handing off subscriber stations between at least two cells, wherein the said hand-off frequency is not used by the base station of the said two cells for serving subscriber stations and wherein, hand-off is triggered when received signal strength at serving base station, hand-off base station or at subscriber station is below acceptable value and assigning frequencies, other than the hand-off frequency, to the base stations called as serving base stations (SBS) located within the cells of the service area, for serving the subscriber stations within the cell. The method further comprising of regulating the signal transmission strength of the serving base station.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: April 11, 2017
    Assignee: Tejas Networks Limited
    Inventor: Vinod Kumar. M
  • Patent number: 9565054
    Abstract: The present invention relates to a method and system of fate sharing segment protection. In one embodiment, this can be accomplished by monitoring the infrastructure segments, detecting a fault at the infrastructure segment, provisioning protection group between the source node and the destination node as outer work and outer protect (Outer Protection Group, OPG), and between at least two intermediate nodes as inner work and inner protect (Inner Protection Group IPG) and provisioning at least one supplementary outer protect on the same port of the OPG nodes where the OPG is provisioned, such that the outer supplementary protect diverge in such a way that mirrors the behavior (or shares the fate) of the inner work and inner protect.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: February 7, 2017
    Assignee: TEJAS NETWORKS LIMITED
    Inventor: Kumar Vinod Madaiah
  • Patent number: 9544877
    Abstract: A method and system of bearer management signalling in a communication network comprising of transporting bearer resource request message of both the UE and RN via DeNB to management entity of UE within EPC, as a signalling message over uplink channel referred to as “Union of Resource Request” (UR Request) message. The bearer resource response message from one of the management entity of UE or management entities of UE and RN within EPC are transported as a signalling message to Evolved Packet Edge (EPE) via DeNB over the downlink channel referred to as “Implicit Admission Response” (IA Response). This manages bearer setup signalling as a single loop, by transportation of ‘UR Request’ signalling message and receiving one “IA Response” signalling message over uplink and downlink channels respectively. EPE is a conglomeration of network nodes comprising of UEs, RNs and all other network nodes that communicate over EPC via DeNB.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: January 10, 2017
    Assignee: TEJAS NETWORKS LIMITED
    Inventors: Kumar Rohit, R C Sanil, Kumar M Vinod
  • Patent number: 9538394
    Abstract: A method for bearer signalling management in a communication network comprising of transporting bearer resource request message of both the UE and RN via DeNB to managing entity of RN within EPC, as a signalling message over uplink channel referred to as ‘Union of Resource Request (UR Request)’ message. The bearer resource response message from one of the managing entity of RN or managing entities of UE and RN within EPC are transported as a signalling message to Evolved Packet Edge (EPE) via DeNB over the downlink channel referred to as ‘Union of Admission Response (UA Response)’. This manages bearer setup signalling as a single loop, by transportation of ‘UR Request’ signalling message and receiving one ‘UA Response’ signalling message over uplink and downlink channels respectively. EPE is a conglomeration of network nodes comprising of UEs, RNs and all other network nodes that communicate over EPC via DeNB.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: January 3, 2017
    Assignee: TEJAS NETWORKS LIMITED
    Inventors: Kumar Rohit, R C Sanil, Kumar M Vinod
  • Patent number: 9491041
    Abstract: The present invention relates to a protection switching method in a communication network, the communication network including plurality of communication devices forming a linear chain and at least one non-ERPS on the nodes ERPS (Ethernet Ring Protection Switching) device connecting terminal ports of the linear chain and thereby forming a ring. In one embodiment this is accomplished by instantiating ERPS on each communication device that forms a linear chain and on each non-terminal ports of the linear chain, identifying a node or link fault in the network, wherein the link or node fault is detected by Continuity Check Message (CCM), Loss of Light (LOL), Loss of Signal (LOS), Loss of periodic continuity check messages (IEEE 802.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: November 8, 2016
    Assignee: Tejas Networks Limited
    Inventors: Vinod Kumar Madaiah, Somnath Ojha, Jishnu Aravindakshan, Balasubramanian Krishnamoorthy
  • Patent number: 9473391
    Abstract: A method and a system for protection switching is provided. The system includes a plurality of base transceiver station (BTS) linked by a communication network over which each of the plurality of BTS communicate. The plurality of BTS includes a primary BTS and at least two secondary BTS. Each of the plurality of BTS further includes at least two bidirectional antennas, provisioning traffic to at least one secondary BTS as work BTS for backhauling a traffic. The traffic includes a user data traffic or a control and signaling data traffic from the primary BTS. The primary BTS periodically checks for control signal from the plurality of BTS. The primary BTS, upon detection of a failure in a link between the primary BTS and the secondary BTS, may steer a beam to a next available secondary BTS as a protect BTS.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: October 18, 2016
    Assignee: Tejas Networks Limited
    Inventor: Vinod Kumar Madaiah
  • Patent number: 9432851
    Abstract: A method and system of bearer management signalling in a communication network comprising of transporting bearer resource request message of both the UE and RN via DeNB to managing entity of UE within EPC, as a signalling message over uplink channel referred to as ‘Union of Resource Request’ message. The bearer resource response message from one of the managing entity of UE or managing entities of UE and RN within EPC are transported as a signalling message to Evolved Packet Edge (EPE) via DeNB over the downlink channel referred to as ‘Union of Admission Response’. This manages bearer setup signalling as a single loop, by transportation of ‘UR Request’ signalling message and receiving one ‘UA Response’ signalling message over uplink and downlink channels respectively.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: August 30, 2016
    Assignee: Tejas Networks Limited
    Inventors: Kumar Rohit, R C Sanil, Kumar M Vinod
  • Patent number: 9419860
    Abstract: The present disclosure relates to managing a logical topology change in a network. The entries of the forwarding database are flushed intelligently without arbitrarily removing the forwarding database resulting in flooding. In one embodiment, a logical topology number (LTN) is maintained by all the interfaces and the forwarding database in the logical topology. In case of any change in the network topology, the LTN of the interfaces affected by the topology change is changed. Further, while sending a frame, LTN of the forwarding database entry for a destination address is compared with LTN of the logical topology. In case of mismatch, the entry is invalidated and the frame is flooded to all other ports for entering new entries into the database. LTN of the forwarding database entry for a source address is compared with the LTN of the logical topology.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: August 16, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventor: Balasubramanian Krishnamoorthy
  • Patent number: 9407421
    Abstract: An aspect of the invention provides for a method of managing bearer signaling for one or more user equipments (UEs) coupled to a eNodeB via at least one relay node, by generating and sending MME Association Consolidation (MAC) request message by the eNodeB to the plurality of disparate mobility management entities managing plurality of user equipments coupled to the said relay node based on receiving bearer resource request of at least one user equipment coupled to the said relay node.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 2, 2016
    Assignee: Tejas Networks Limited
    Inventor: Vinod Kumar. M
  • Patent number: 9396075
    Abstract: A method and system protects switching in a network element. At least one data signal at the client entity is received, wherein the signal flow through server entity via the client entity. A configuring protection group on at least one client entity is served by at least two server entity, wherein the protection group includes at least one work entity and at least one protect entity. A plurality of supplement client entities of client entity is created such that at least one of the supplement client entity flows over one server entity and checking the entities for a fault to raise alarm to their respective controllers. The controller includes at least one server layer protection controller and at least one client layer protection controller.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: July 19, 2016
    Assignee: Tejas Networks Limited
    Inventors: Nikhil Satyarthi, Nishant Sharma, Hiren Desai
  • Patent number: 9374178
    Abstract: The present invention and its embodiments are made to provide for a feasible solution for determining transport block size in a wireless communication system. The method comprising of selecting plurality of transport block sizes near to the queue size of the user data and calculating the code rate for the plurality of selected transport block sizes and calculating code rate derived from Channel Quality Information (CQI) index. The method further comprising of comparing the code rates of the plurality of selected transport block sizes with the code rate derived from CQI index and filtering the selected transport block sizes having number of zero padding below a threshold value and having code rates equal or less than the code rate derived from CQI index and selecting one transport block for each modulation order from among the filtered transport block sizes which require lower number of Physical Resource Blocks (PRBs) to transmit.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: June 21, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventors: Vetapalem Kesava Rao, Sudarshana Vardappa, Sriram N. Suresh
  • Patent number: 9374839
    Abstract: The embodiments herein provide a method and system for preventing collisions in a contention based random access preambles in a communication network. The method comprises of dividing the contention based preambles into a plurality of sub-groups, categorizing a plurality of users into a plurality of sub-groups, scheduling the users within a preamble subgroup in one or more random access channel opportunities and transmitting information on the sub-groups of the preamble and the random access channel opportunities to one or more user equipments. The users within a sub-group are provided access to the set of contention based preambles dispersed in time thereby reducing the number of user equipments colliding on a single random access preamble channel.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: June 21, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventor: Rohith Vijayakumar Hegde
  • Patent number: 9357476
    Abstract: The embodiments herein provide a method and system for acquiring modified system information messages in user equipment. The method comprises notifying a modification in system information to user equipment for acquiring the modified system information. The notification comprises adding an SI-Modified flag to a scheduling information element in a system information block type-1, storing the system information, in a network, acquiring and comparing a modified system information with the stored system information, identifying system information modification and transmitting the updated system information to user equipment.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 31, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventor: Rohith Vijayakumar Hegde
  • Publication number: 20160150302
    Abstract: The present invention relates to passive optical network (PON), and in particular, to an optical network terminal (ONT) in the PON system. In one embodiment, the optical network terminal includes a first interface coupled to a communications network, a second interface coupled to a network client and a processor including a memory coupled to the first interface and to the second interface, wherein the processor is capable of converting optical signals to electric signals, such that the network client can access the communications network.
    Type: Application
    Filed: August 11, 2011
    Publication date: May 26, 2016
    Applicant: Tejas Networks Limited
    Inventor: Govindan Kutty Thrithala
  • Patent number: 9338760
    Abstract: The various embodiments of the present invention provide a method and system for notifying, a system information modification in at least one of a MIB/SIB1. The method comprises of transmitting a system information in a first modification period by an eNodeB, verifying the system information at eNodeB to check if the system information is to be modified in a modification period succeeding the first modification period, checking at eNodeB if only the system information corresponding to the at least one of the MIB or the SIB1 is modified, fetching the modified system information without initiating a paging procedure if only the MIB/SIB1 is modified and transmitting the modified system information in a succeeding modification period to the system information transmission module. The UE acquires the MIB/SIB1 at a start of each modification period.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: May 10, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventors: Rohith Vijayakumar Hegde, Vishwas Dubey
  • Patent number: 9294885
    Abstract: The embodiments herein provide a method of acquiring a plurality of system information messages in a radio communication network. The method comprises the steps of overlapping a plurality of system information windows and acquiring the plurality of system information messages for which the system information window overlaps in the user equipment. The method of overlapping the system information windows comprises of transmitting system information scheduling configuration containing scheduling information list, calculating start sub-frame and start radio frame of the system information window for the system information messages from the scheduling information, determining occurrence of system information window overlap of the system information messages and acquiring a plurality of system information messages in the overlapped system information windows. The system information acquisition is performed until the plurality of system information messages in the overlapped system information widow is acquired.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: March 22, 2016
    Assignee: TEJAS NETWORKS LIMITED
    Inventor: Rohith Vijayakumar Hegde
  • Patent number: 9264303
    Abstract: The present invention relates to a protection switching for use in a communication network, and more particularly, to a method and a system for protection switching provision by a distributed or extended protection group in a communication network.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: February 16, 2016
    Assignee: Tejas Networks Limited
    Inventors: Vinod Kumar Madaiah, Somnath Ojha
  • Patent number: 9246795
    Abstract: The present invention relates to a protection method based on preplanning duality of paths for a unicast and/or a multicast traffic, by extending a network into hierarchy of connected rings to form a hierarchical ring based tree (HRBT) structure. The present method enables a deterministic method to route a frame (or packet) when a primary path to destination is unavailable due to node/link failure, bandwidth crunch, mis-configuration, etc. If both primary and secondary (or alternate) path are pre-provisioned before traffic is allowed, the switch-over time from primary (P) path to secondary (S) path will be minimized, thus enabling 50 ms protection switching in packet network.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: January 26, 2016
    Assignee: Tejas Networks Limited
    Inventors: Vinod Kumar Madaiah, Advait Abhay Dixit