Patents by Inventor Dolors Sala
Dolors Sala 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).
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Patent number: 8654776Abstract: 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: GrantFiled: May 5, 2011Date of Patent: February 18, 2014Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla, John O. Limb, Richard Protus
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Patent number: 8654775Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.Type: GrantFiled: March 21, 2011Date of Patent: February 18, 2014Assignee: Broadcom CorporationInventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
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Patent number: 8121153Abstract: 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: GrantFiled: October 19, 2010Date of Patent: February 21, 2012Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla
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Patent number: 8054856Abstract: 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: GrantFiled: April 1, 2010Date of Patent: November 8, 2011Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla, Ted Rabenko
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Publication number: 20110211479Abstract: 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: ApplicationFiled: May 5, 2011Publication date: September 1, 2011Applicant: Broadcom CorporationInventors: Dolors SALA, Ajay Chandra V. GUMMALLA, John O. LIMB, Richard PROTUS
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Publication number: 20110170507Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.Type: ApplicationFiled: March 21, 2011Publication date: July 14, 2011Applicant: Broadcom CorporationInventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
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Patent number: 7974532Abstract: 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: GrantFiled: March 19, 2009Date of Patent: July 5, 2011Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla, Niki R. Pantelias
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Publication number: 20110149895Abstract: 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: ApplicationFiled: February 28, 2011Publication date: June 23, 2011Applicant: Broadcom CorporationInventors: Dolors SALA, Ajay Chandra V. Gummalla
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Publication number: 20110150499Abstract: 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: ApplicationFiled: October 19, 2010Publication date: June 23, 2011Applicant: Broadcom CorporationInventors: Dolors SALA, Ajay Chandra V. Gummalla
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Patent number: 7953063Abstract: 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: GrantFiled: October 5, 2009Date of Patent: May 31, 2011Assignee: Broadcom CorporationInventors: Ajay Chandra V. Gummalla, Dolors Sala
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Patent number: 7940774Abstract: 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: GrantFiled: August 28, 2007Date of Patent: May 10, 2011Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla, John O. Limb, Richard Protus
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Patent number: 7912066Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.Type: GrantFiled: June 12, 2007Date of Patent: March 22, 2011Assignee: Broadcom CorporationInventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
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Patent number: 7899020Abstract: 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: GrantFiled: June 12, 2007Date of Patent: March 1, 2011Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla
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Publication number: 20100284420Abstract: 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: ApplicationFiled: May 17, 2010Publication date: November 11, 2010Applicant: Broadcom CorporationInventors: John O. LIMB, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
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Patent number: 7817676Abstract: 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: GrantFiled: August 13, 2007Date of Patent: October 19, 2010Assignee: Broadcom CorporationInventors: Dolors Sala, Ajay Chandra V. Gummalla
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Publication number: 20100214907Abstract: 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: ApplicationFiled: April 1, 2010Publication date: August 26, 2010Applicant: Broadcom CorporationInventors: Dolors SALA, Ajay Chandra V. GUMMALLA, Ted RABENKO
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Patent number: 7733912Abstract: In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region.Type: GrantFiled: June 12, 2007Date of Patent: June 8, 2010Assignee: Broadcom CorporationInventors: John Limb, Daniel Howard, Dolors Sala, Richard Protus
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Patent number: 7724710Abstract: 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: GrantFiled: May 8, 2007Date of Patent: May 25, 2010Assignee: Broadcom CorporationInventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
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Patent number: 7724763Abstract: 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: GrantFiled: May 8, 2007Date of Patent: May 25, 2010Assignee: Broadcom CorporationInventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn
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Patent number: 7720090Abstract: 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: GrantFiled: October 31, 2006Date of Patent: May 18, 2010Assignee: Broadcom CorporationInventors: John O. Limb, Dolors Sala, Ajay Chandra V. Gummalla, Fred A. Bunn