Patents by Inventor Naoya Kumita
Naoya Kumita 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: 10326705Abstract: In a core node, packet related information included in a packet is extracted, a virtual queue length, which is an estimated value of a queue length of a transmission queue addressed to a user in an edge device, is calculated and held on a user basis on the basis of the packet related information and band information of a line between the edge device and the user, and a determination is made, on a user basis, as to whether or not band control is required, on the basis of the virtual queue length and predetermined conditions so as to perform, on the basis of the result of the determination, the band control of the packet addressed to the user on a user basis in a packet relay part.Type: GrantFiled: March 10, 2017Date of Patent: June 18, 2019Assignee: Alaxala Networks CorporationInventors: Kazuo Sugai, Takeshi Kumagai, Yuichi Ishikawa, Naoya Kumita
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Publication number: 20170289055Abstract: In a core node, packet related information included in a packet is extracted, a virtual queue length, which is an estimated value of a queue length of a transmission queue addressed to a user in an edge device, is calculated and held on a user basis on the basis of the packet related information and band information of a line between the edge device and the user, and a determination is made, on a user basis, as to whether or not band control is required, on the basis of the virtual queue length and predetermined conditions so as to perform, on the basis of the result of the determination, the band control of the packet addressed to the user on a user basis in a packet relay part.Type: ApplicationFiled: March 10, 2017Publication date: October 5, 2017Inventors: Kazuo SUGAI, Takeshi KUMAGAI, Yuichi ISHIKAWA, Naoya KUMITA
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Patent number: 9667548Abstract: It is provided a relay apparatus, comprising: a plurality of ports coupled to a network; a Layer 2 processing module for relaying, via the network, a frame comprising a Layer 2 header and a Layer 2 data segment, the Layer 2 data segment comprising a Layer 3 header and a Layer 3 data segment; and an output unit, wherein the module updates a value of a particular field of the Layer 3 header, uses a first characteristic value related to the Layer 3 header, which is stored in a given field, and a pre-update value and post-update value of the particular field to compute a second characteristic value related to the Layer 3 header, and updates the value of the given field from the first characteristic value to the second characteristic value, and wherein the output unit outputs the updated frame as an output destination of the updated frame.Type: GrantFiled: November 7, 2014Date of Patent: May 30, 2017Assignee: Alaxala Networks CorporationInventors: Yuichi Ishikawa, Kentarou Sugawara, Takeshi Kumagai, Naoya Kumita
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Patent number: 9240894Abstract: A network system includes: a core switch; and an edge switch. The edge switch includes: a join message identification unit; and a marking unit. The join message identification unit identifies a join message from among MAC frames from the user network. The marking unit marks mark information to a header of a MAC-in-MAC frame in which the identified join message is encapsulated. The core switch includes: a plurality of input/output ports; a mark identification unit; and a port setup unit. The mark identification unit identifies a MAC-in-MAC frame to whose a header the mark information is marked. The port setup unit associates a multicast group of a join message which is encapsulated in the identified MAC-in-MAC frame, with an input/output port to which the identified MAC-in-MAC frame is input.Type: GrantFiled: April 26, 2013Date of Patent: January 19, 2016Assignee: ALAXALA NETWORKS CORPORATIONInventors: Teruo Kaganoi, Naoya Kumita
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Publication number: 20150138978Abstract: It is provided a relay apparatus, comprising: a plurality of ports coupled to a network; a Layer 2 processing module for relaying, via the network, a frame comprising a Layer 2 header and a Layer 2 data segment, the Layer 2 data segment comprising a Layer 3 header and a Layer 3 data segment; and an output unit, wherein the module updates a value of a particular field of the Layer 3 header, uses a first characteristic value related to the Layer 3 header, which is stored in a given field, and a pre-update value and post-update value of the particular field to compute a second characteristic value related to the Layer 3 header, and updates the value of the given field from the first characteristic value to the second characteristic value, and wherein the output unit outputs the updated frame as an output destination of the updated frame.Type: ApplicationFiled: November 7, 2014Publication date: May 21, 2015Inventors: Yuichi ISHIKAWA, Kentarou SUGAWARA, Takeshi KUMAGAI, Naoya KUMITA
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Publication number: 20130230046Abstract: A network system includes: a core switch; and an edge switch. The edge switch includes: a join message identification unit; and a marking unit. The join message identification unit identifies a join message from among MAC frames from the user network. The marking unit marks mark information to a header of a MAC-in-MAC frame in which the identified join message is encapsulated. The core switch includes: a plurality of input/output ports; a mark identification unit; and a port setup unit. The mark identification unit identifies a MAC-in-MAC frame to whose a header the mark information is marked. The port setup unit associates a multicast group of a join message which is encapsulated in the identified MAC-in-MAC frame, with an input/output port to which the identified MAC-in-MAC frame is input.Type: ApplicationFiled: April 26, 2013Publication date: September 5, 2013Applicant: ALAXALA NETWORKS CORPORATIONInventors: Teruo KAGANOI, Naoya KUMITA
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Patent number: 8437349Abstract: A network system includes: a core switch; and an edge switch. The edge switch includes: a join message identification unit; and a marking unit. The join message identification unit identifies a join message from among MAC frames from the user network. The marking unit marks mark information to a header of a MAC-in-MAC frame in which the identified join message is encapsulated. The core switch includes: a plurality of input/output ports; a mark identification unit; and a port setup unit. The mark identification unit identifies a MAC-in-MAC frame in which a header is marked with the mark information. The port setup unit associates a multicast group of a join message which is encapsulated in the identified MAC-in-MAC frame, with an input/output port to which the identified MAC-in-MAC frame is input.Type: GrantFiled: December 1, 2009Date of Patent: May 7, 2013Assignee: Alaxala Networks CorporationInventors: Teruo Kaganoi, Naoya Kumita
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Publication number: 20100246580Abstract: A network system includes: a core switch; and an edge switch. The edge switch includes: a join message identification unit; and a marking unit. The join message identification unit identifies a join message from among MAC frames from the user network. The marking unit marks mark information to a header of a MAC-in-MAC frame in which the identified join message is encapsulated. The core switch includes: a plurality of input/output ports; a mark identification unit; and a port setup unit. The mark identification unit identifies a MAC-in-MAC frame to whose a header the mark information is marked. The port setup unit associates a multicast group of a join message which is encapsulated in the identified MAC-in-MAC frame, with an input/output port to which the identified MAC-in-MAC frame is input.Type: ApplicationFiled: December 1, 2009Publication date: September 30, 2010Applicant: ALAXALA NETWORKS CORPORATIONInventors: Teruo KAGANOI, Naoya KUMITA
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Patent number: 7710962Abstract: The present invention provides a technology for processing packets, such as VoIP packets, with priority. A priority-designating unit designates priority information based on header information. A pointer searching unit refers to a pointer table to obtain pointer information corresponding to a destination address. A sorting unit sorts the pointer information into a high-priority queue and a low-priority queue according to the priority information. A next queue holds pointer information obtained from a destination information table. A scheduler extracts and outputs the pointer information from each queue in the following order of priority: the next queue, a high-priority queue, and a low-priority queue.Type: GrantFiled: March 24, 2006Date of Patent: May 4, 2010Assignee: Alaxala Networks CorporationInventors: Yasuhiro Kodama, Kazuo Sugai, Shinichi Akahane, Hiroki Yano, Kaoru Okano, Naoya Kumita
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Publication number: 20070133531Abstract: The present invention provides a technology for processing packets, such as VoIP packets, with priority. A priority-designating unit designates priority information based on header information. A pointer searching unit refers to a pointer table to obtain pointer information corresponding to a destination address. A sorting unit sorts the pointer information into a high-priority queue and a low-priority queue according to the priority information. A next queue holds pointer information obtained from a destination information table. A scheduler extracts and outputs the pointer information from each queue in the following order of priority: the next queue, a high-priority queue, and a low-priority queue.Type: ApplicationFiled: March 24, 2006Publication date: June 14, 2007Inventors: Yasuhiro Kodama, Kazuo Sugai, Shinichi Akahane, Hiroki Yano, Kaoru Okano, Naoya Kumita