Patents by Inventor Pawel Sowinski
Pawel Sowinski 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: 9503180Abstract: Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.Type: GrantFiled: September 4, 2014Date of Patent: November 22, 2016Assignee: Cisco Technology, Inc.Inventors: Hang Jin, Tong Liu, Pawel Sowinski, De Fu Li, John Skrobko
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Publication number: 20160072578Abstract: Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.Type: ApplicationFiled: September 4, 2014Publication date: March 10, 2016Inventors: Hang Jin, Tong Liu, Pawel Sowinski, De Fu Li, John Skrobko
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Patent number: 8711752Abstract: A system includes a forwarding engine to schedule when replicas of a received multicast packet are forwarded towards one or more multicast recipients. The system also includes an egress interface device to replicate the multicast packet and forward the multicast packet replica towards the one or more multicast recipients when prompted by the forwarding engine based on the scheduling.Type: GrantFiled: January 12, 2010Date of Patent: April 29, 2014Assignee: Cisco Technology, Inc.Inventors: Tong Liu, Yie-Fong Dan, Pawel Sowinski, Chad Mikkelson, William Beebee
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Patent number: 8134921Abstract: In one embodiment, a Cable Modem Termination System (CMTS) generates a bandwidth grant message corresponding to a time segment. The CMTS identifies a portion of the time segment to be assigned according to received bandwidth request messages originating from downstream cable modems. The CMTS determines whether a remaining portion of the time segment can accommodate more than N broadcast contention slots, and if so, selects at least one of the cable modems for receiving an upstream bandwidth boost.Type: GrantFiled: April 1, 2008Date of Patent: March 13, 2012Assignee: Cisco Technology, Inc.Inventors: Robert Goguen, De Fu Li, Pawel Sowinski, Nicos Achilleoudis
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Patent number: 8111711Abstract: In one example, a Cable Modem Termination System (CMTS) sends first bandwidth allocation messages to a first upstream transmit interface on a cable modem and send second bandwidth allocation messages to a second upstream transmit interface on the cable modem. The bandwidth allocation messages indicate transmit windows for the cable modem to range over the interfaces. The transmit windows included in the first bandwidth allocation messages are spaced based on receipt of ranging requests from the second upstream transmit interface, and the transmit windows included in the second bandwidth allocation messages are spaced based on receipt of ranging requests from the first upstream transmit interface.Type: GrantFiled: December 12, 2008Date of Patent: February 7, 2012Assignee: Cisco Technology, Inc.Inventors: DeFu Li, Pawel Sowinski, Robert Goguen, Tong Liu, Alon Bernstein
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Patent number: 8081659Abstract: An M-CMTS compatible UEQAM device implements circuitry to identify and analyze MAP message in the data stream sent from the M-CMTS Core with respect to timing information embedded in those messages. The improved UEQAM will then create a specific message as an extension to DEPI to communicate that information to the M-CMTS Core. The M-CMTS Core will employ that analysis to automatically adjust MAP message advance time to reduce delay and thus improve system performance. This invention will provide a closed-loop between the M-CMTS Core and the UEQAM where valuable transmission information will periodically be fed back from UEQAM-to-M-CMTS Core in real-time.Type: GrantFiled: July 2, 2008Date of Patent: December 20, 2011Assignee: Cisco Technology, Inc.Inventors: Pawel Sowinski, Michael J. Healy, John T. Chapman, Daniel W. Crocker
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Publication number: 20110170542Abstract: A system includes a forwarding engine to schedule when replicas of a received multicast packet are forwarded towards one or more multicast recipients. The system also includes an egress interface device to replicate the multicast packet and forward the multicast packet replica towards the one or more multicast recipients when prompted by the forwarding engine based on the scheduling.Type: ApplicationFiled: January 12, 2010Publication date: July 14, 2011Applicant: CISCO TECHNOLOGY, INC.Inventors: Tong Liu, Yie-Fong Dan, Pawel Sowinski, Chad Mikkelson, William Beebee
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Patent number: 7839773Abstract: In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.Type: GrantFiled: March 14, 2008Date of Patent: November 23, 2010Assignee: Cisco Technology, Inc.Inventors: De Fu Li, Pawel Sowinski, James An, Robert Goguen
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Publication number: 20100154016Abstract: In one example, a Cable Modem Termination System (CMTS) sends first bandwidth allocation messages to a first upstream transmit interface on a cable modem and send second bandwidth allocation messages to a second upstream transmit interface on the cable modem. The bandwidth allocation messages indicate transmit windows for the cable modem to range over the interfaces. The transmit windows included in the first bandwidth allocation messages are spaced based on receipt of ranging requests from the second upstream transmit interface, and the transmit windows included in the second bandwidth allocation messages are spaced based on receipt of ranging requests from the first upstream transmit interface.Type: ApplicationFiled: December 12, 2008Publication date: June 17, 2010Applicant: Cisco Technology, Inc.Inventors: De Fu Li, Pawel Sowinski, Robert Goguen, Tong Liu, Alon Bernstein
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Publication number: 20100002719Abstract: An M-CMTS compatible UEQAM device implements circuitry to identify and analyze MAP message in the data stream sent from the M-CMTS Core with respect to timing information embedded in those messages. The improved UEQAM will then create a specific message as an extension to DEPI to communicate that information to the M-CMTS Core. The M-CMTS Core will employ that analysis to automatically adjust MAP message advance time to reduce delay and thus improve system performance. This invention will provide a closed-loop between the M-CMTS Core and the UEQAM where valuable transmission information will periodically be fed back from UEQAM-to-M-CMTS Core in real-time.Type: ApplicationFiled: July 2, 2008Publication date: January 7, 2010Applicant: CISCO TECHNOLOGY, INC.Inventors: Pawel Sowinski, Michael James Healy, John Torrence Chapman, Daniel Wilson Crocker
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Publication number: 20090249417Abstract: In one embodiment, a Cable Modem Termination System (CMTS) generates a bandwidth grant message corresponding to a time segment. The CMTS identifies a portion of the time segment to be assigned according to received bandwidth request messages originating from downstream cable modems. The CMTS determines whether a remaining portion of the time segment can accommodate more than N broadcast contention slots, and if so, selects at least one of the cable modems for receiving an upstream bandwidth boost.Type: ApplicationFiled: April 1, 2008Publication date: October 1, 2009Applicant: Cisco Technology, Inc.Inventors: Robert Goguen, Nicos Achilleoudis, De Fu Li, Pawel Sowinski
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Publication number: 20090232111Abstract: In one embodiment, a first ranging timing description describing at least a duration of time during which a subject cable modem (CM) may burst and a duration of time during which the subject CM and other CMs in a multiple access network are not permitted to burst is translated into a second ranging timing description describing a duration during which a burst from the subject CM is expected to be received by a cable modem termination system (CMTS). The CMTS is conditioned to receive a burst from the subject CM during the duration of time described by the second ranging timing description. A timing offset is determined from at least an actual time a burst from the subject CM is received by the CMTS and the duration of time during which the subject CM and other CMs in the multiple access network are not permitted to burst to produce a determined timing offset. The determined timing offset is reported to compensate for delay in the multiple access network and the subject CM.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Applicant: Cisco Technology, Inc.Inventors: De Fu Li, Pawel Sowinski, James An, Robert Goguen
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Publication number: 20050226257Abstract: Users are enabled to network multiple customer premises equipment (CPE) devices together to form a virtual local area network (VLAN) among CPE devices that access the Internet through different cable modems. In a preferred embodiment, each VLAN is associated with a unique security association identifier (SAID), which enables a cable modem termination system (CMTS) to implement a secondary level of security in its routing procedures. As a result, data packets addressed to one or more members of a VLAN can be encrypted using the corresponding SAID such that access to the data packets is restricted only to members of the appropriate VLAN.Type: ApplicationFiled: March 30, 2004Publication date: October 13, 2005Inventors: Vahe Mirzabegian, Pawel Sowinski, Ajit Nayak, Stuart Green
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Patent number: 5942495Abstract: The invention relates to an N-alkyl-N-glycosyl derivative of antifungal antibiotics of the polyene macrolide group of general formula 1(a), wherein M represents polyene macrolide antibiotics residues, R represents a variable part of sugar residue, R.sup.1 represents a C.sub.1-4 alkyl group and R.sup.2 represents hydrogen or a C.sub.1-4 alkyl group; their salts of general formula 2(a), wherein R, R.sup.1, R.sup.2 and M are as herein defined and A represents an anion of organic or inorganic acid. Compounds of formula 1(b) and 2(b) wherein the N-alkyl and alkyl ester groups are represented by methyl are of particular interest.The invention relates also to processes for preparation of the compounds, to compositions containing these compounds and to their use in therapy and the treatment of external and internal fungal infections in humans and animals.Type: GrantFiled: May 16, 1997Date of Patent: August 24, 1999Assignee: BTG International LimitedInventors: Edward Borowski, Jolanta Grzybowska, Pawel Sowinski, Jerzy Gumieniak, Andrzej Czerwinski