Patents by Inventor Ajay Chandra V. Gummalla

Ajay Chandra V. Gummalla 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: 8654776
    Abstract: A system and method is provided for scheduling transmissions from a plurality of services operating over a widely distributed communications network. A headend communications device (such as a cable modem termination system) arbitrates bandwidth among a plurality of cable modems configurable for bi-directional communications. The headend grants a bandwidth region to a specified cable modem or assigns contention regions for a group of cable modems. Each cable modem contains a local scheduler that sends requests for bandwidth according to local policies or rules. Upon receipt of a grant from the headend, the local scheduler selects packets to be transmitted to best serve the needs of the services associated with the cable modem. Accordingly, a service requesting bandwidth may not be the service utilizing the grant corresponding to bandwidth request. Nonetheless, the local scheduler manages bandwidth allocation among its local services such that all requesting services eventually receive bandwidth.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 18, 2014
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla, John O. Limb, Richard Protus
  • Patent number: 8149838
    Abstract: A method is provided for payload header suppression within a wireless network in which a limited number of suppression indices are used to map suppression rules to data streams. Network resources are conserved by implementing precise classification algorithms to correctly identify incoming packets at the wireless device as belonging to a particular data stream, which ensures that a minimum number of suppression indices are utilized. Additionally, network resources are conserved by utilizing sophisticated algorithms for reusing suppression indices when new data streams are detected by the wireless device. One such reuse algorithm involves recycling the suppression index that has been least recently used in transmitting a packet with a suppressed payload header.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: April 3, 2012
    Assignee: Broadcom Corporation
    Inventors: Anthony P. Saladino, Rennie L. Gardner, Michael R. Robinson, Ajay Chandra V. Gummalla
  • Patent number: 8121153
    Abstract: Devices and a system for synchronizing time between a centralized controller device and at least one subscriber device on a fiber access network. The control layer of a network device is expanded, and additional messaging control is added via the transmission of data frames. The expansion prevents reliance on a physical layer signal. The time synchronization also allows a time stamp to be incorporated into a message. Thus, bandwidth is not wasted by simply transmitting a time stamp by itself. In an embodiment, the centralized controller device measures the time difference between the time at which a particular ranging request is transmitted and the time at which the particular ranging request is received. The time difference represents the time adjustment value for the particular subscriber device and allows the device to synchronize its time with that of the centralized controller device.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: February 21, 2012
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla
  • Patent number: 8054856
    Abstract: A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: November 8, 2011
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla, Ted Rabenko
  • Publication number: 20110211479
    Abstract: A system and method is provided for scheduling transmissions from a plurality of services operating over a widely distributed communications network. A headend communications device (such as a cable modem termination system) arbitrates bandwidth among a plurality of cable modems configurable for bi-directional communications. The headend grants a bandwidth region to a specified cable modem or assigns contention regions for a group of cable modems. Each cable modem contains a local scheduler that sends requests for bandwidth according to local policies or rules. Upon receipt of a grant from the headend, the local scheduler selects packets to be transmitted to best serve the needs of the services associated with the cable modem. Accordingly, a service requesting bandwidth may not be the service utilizing the grant corresponding to bandwidth request.
    Type: Application
    Filed: May 5, 2011
    Publication date: September 1, 2011
    Applicant: Broadcom Corporation
    Inventors: Dolors SALA, Ajay Chandra V. GUMMALLA, John O. LIMB, Richard PROTUS
  • Patent number: 7974532
    Abstract: A system and method for management of bandwidth in a fiber optic, ethernet-based, TDMA communications system. A request/grant process is used to control the use of upstream bandwidth. A sense of time must therefore be shared by a headend and remote end-user devices. The invention provides for a gigabit media-independent interface in a media access controller to detect start-of-frame delimiters in incoming data. This allows for synchronization of a headend and end-user devices. The invention also allows for phase locking a transmit bit rate, at a headend, to the headend's clock. Transmitted data can the be used downstream to derive a local clock. Synchronization can also be maintained by the use of synchronization bytes in MPEG frames and/or variable length frames. Efficient bandwidth usage can also be facilitated by the use of maximum data units in allocating bandwidth in unsolicited grants, and by allowing flexible fragmentation and/or prioritization of internet protocol (IP) packets.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: July 5, 2011
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla, Niki R. Pantelias
  • Publication number: 20110150499
    Abstract: A system, method, and computer program product for synchronizing time between a centralized controller device and at least one subscriber device on a fiber access network. The control layer of a network device is expanded, and additional messaging control is added via the transmission of data frames. The expansion prevents reliance on a physical layer signal. The time synchronization also allows a time stamp to be incorporated into a message. Thus, bandwidth is not wasted by simply transmitting a time stamp by itself. In an embodiment, the centralized controller device measures the time difference between the time at which a particular ranging request is transmitted and the time at which the particular ranging request is received. The time difference represents the time adjustment value for the particular subscriber device and allows the device to synchronize its time with that of the centralized controller device.
    Type: Application
    Filed: October 19, 2010
    Publication date: June 23, 2011
    Applicant: Broadcom Corporation
    Inventors: Dolors SALA, Ajay Chandra V. Gummalla
  • Publication number: 20110149895
    Abstract: A system for reducing the bandwidth required to transmit a data packet via a wireless network is provided. In an embodiment, the system is configured for generating a packet to be transmitted via the wireless network. Once a packet is generated, a packet type of the packet to be transmitted via the wireless network is determined. Based on the packet type, a suppression rule is selectively applied to the packet to generate a suppressed packet. Applying the suppression rule includes suppressing at least a portion of the header of the packet and adding a descriptor associated with the header suppression rule to the packet. The system is configured to conclude with the transmittal of the suppressed packet via the wireless network.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 23, 2011
    Applicant: Broadcom Corporation
    Inventors: Dolors SALA, Ajay Chandra V. Gummalla
  • Patent number: 7953063
    Abstract: A method and system for increasing the efficiency of providing bandwidth for voice traffic to a data provider via communication mediums is provided. This is generally accomplished by not transmitting any data during the silence periods and playing out background noise (i.e., comfort noise) at the other end, to obtain significant bandwidth savings.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: May 31, 2011
    Assignee: Broadcom Corporation
    Inventors: Ajay Chandra V. Gummalla, Dolors Sala
  • Patent number: 7940774
    Abstract: A system and method is provided for scheduling transmissions from a plurality of services operating over a widely distributed communications network. A headend communications device (such as a cable modem termination system) arbitrates bandwidth among a plurality of cable modems configurable for bi-directional communications. The headend grants a bandwidth region to a specified cable modem or assigns contention regions for a group of cable modems. Each cable modem contains a local scheduler that sends requests for bandwidth according to local policies or rules. Upon receipt of a grant from the headend, the local scheduler selects packets to be transmitted to best serve the needs of the services associated with the cable modem. Accordingly, a service requesting bandwidth may not be the service utilizing the grant corresponding to bandwidth request. Nonetheless, the local scheduler manages bandwidth allocation among its local services such that all requesting services eventually receive bandwidth.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: May 10, 2011
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla, John O. Limb, Richard Protus
  • Patent number: 7899020
    Abstract: A method for reducing the bandwidth required to transmit a data packet via a wireless network is provided. In an embodiment, the method includes generating a packet to be transmitted via the wireless network. Once a packet is generated, a packet a packet type of the packet to be transmitted via the wireless network is determined. Based on the packet type, a suppression rule is selectively applied to the packet to generate a suppressed packet. Applying the suppression rule includes suppressing at least a portion of the header of the packet and adding a descriptor associated with the header suppression rule to the packet. The method concludes with the transmittal of the suppressed packet via the wireless network.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: March 1, 2011
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla
  • Publication number: 20100284420
    Abstract: A two way communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The communication system includes a first group of one or more remote devices that interface with a local host in accordance with a first protocol and a second group of one or more remote devices that interface with the local host in accordance with a second protocol. The local host includes a protocol processor that identifies transmissions from the first and second groups of remote devices and routes transmissions from the first group of remote devices to a first processor operating in accordance with the first protocol and also routes transmissions from the second group of remote devices to a second processor operating in accordance with the second protocol.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 11, 2010
    Applicant: Broadcom Corporation
    Inventors: John O. LIMB, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
  • Patent number: 7817676
    Abstract: A system, method, and computer program product for synchronizing time between a centralized controller device and at least one subscriber device on a fiber access network. The control layer of a network device is expanded, and additional messaging control is added via the transmission of data frames. The expansion prevents reliance on a physical layer signal. The time synchronization also allows a time stamp to be incorporated into a message. Thus, bandwidth is not wasted by simply transmitting a time stamp by itself. In an embodiment, the centralized controller device measures the time difference between the time at which a particular ranging request is transmitted and the time at which the particular ranging request is received. The time difference represents the time adjustment value for the particular subscriber device and allows the device to synchronize its time with that of the centralized controller device.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: October 19, 2010
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla
  • Publication number: 20100214907
    Abstract: A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value.
    Type: Application
    Filed: April 1, 2010
    Publication date: August 26, 2010
    Applicant: Broadcom Corporation
    Inventors: Dolors SALA, Ajay Chandra V. GUMMALLA, Ted RABENKO
  • Patent number: 7724710
    Abstract: A wireless communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The wireless communication system includes a first group of one or more subscriber stations that interface with a base station in accordance with a first protocol and a second group of one or more subscriber stations that interface with the base station in accordance with a second protocol. The base station includes a protocol processor that identifies transmissions from the first and second groups of subscriber stations and routes transmissions from the first group of subscriber stations to a first processor operating in accordance with the first protocol and routes transmissions from the second group of subscriber stations to a second processor operating in accordance with the second protocol.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: May 25, 2010
    Assignee: Broadcom Corporation
    Inventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
  • Patent number: 7724763
    Abstract: A wireless communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The wireless communication system includes a first group of one or more subscriber stations that interface with a base station in accordance with a first protocol and a second group of one or more subscriber stations that interface with the base station in accordance with a second protocol. The base station includes a protocol processor that identifies transmissions from the first and second groups of subscriber stations and routes transmissions from the first group of subscriber stations to a first processor operating in accordance with the first protocol and routes transmissions from the second group of subscriber stations to a second processor operating in accordance with the second protocol.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: May 25, 2010
    Assignee: Broadcom Corporation
    Inventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
  • Patent number: 7720090
    Abstract: A two way communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The communication system includes a first group of one or more remote devices that interface with a local host in accordance with a first protocol and a second group of one or more remote devices that interface with the local host in accordance with a second protocol. The local host includes a protocol processor that identifies transmissions from the first and second groups of remote devices and routes transmissions from the first group of remote devices to a first processor operating in accordance with the first protocol and also routes transmissions from the second group of remote devices to a second processor operating in accordance with the second protocol.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: May 18, 2010
    Assignee: Broadcom Corporation
    Inventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
  • Patent number: 7697426
    Abstract: A method and system for combining requests for data bandwidth by a data source for transmission of data over a wireless communication medium is provided. A central node receives one or more bandwidth requests from one or more data sources via wireless communication. A scheduler then combines one or more bandwidths requests from the same data source to create a single data burst bandwidth. The central node then grants the data burst bandwidth to the appropriate data source via wireless communication.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: April 13, 2010
    Assignee: Broadcom Corporation
    Inventors: Ajay Chandra V. Gummalla, Dolors Sala
  • Patent number: 7693182
    Abstract: A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: April 6, 2010
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla, Ted Rabenko
  • Patent number: 7688781
    Abstract: A system for reducing the bandwidth required to wirelessly transmit a packet via a wireless network is provided. In an embodiment, the system includes a transmitting node configured to generate a packet to be transmitted via the wireless network, to select a suppression rule from a table of suppression rules based on the type of the packet to be transmitted, to apply the suppression rule to the packet to generate a suppressed packet, wherein the transmitter node applies the suppression rule by suppressing at least a portion of the header of the packet and by adding a descriptor associated with the header suppression rule to the packet, and to transmit the suppressed packet via the wireless network.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: March 30, 2010
    Assignee: Broadcom Corporation
    Inventors: Dolors Sala, Ajay Chandra V. Gummalla