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1. 发明授权

US11575611B2 Quality of service in packet networks 有权
公开(公告)号：US11575611B2
公开(公告)日：2023-02-07
申请号：US17010396
申请日：2020-09-02
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L12/857 , H04L47/2491 , H04L47/10 , H04L47/2408 , H04L47/2425 , H04L47/17
摘要： Methods and systems for providing quality of service over IP networks are disclosed. In one aspect, a flow label field of a header may be divided into first and second portions. The first portion defines a quality of service. The second portion identifies a message flow. Once the first portion defining the quality of service is established by the sending node, no nodes in the transmission path may change the quality of service value. Each node may route packets based on the quality of service field, or may modify the traffic class field of the header based on the quality of service and then route the packet based on the traffic class field. The QoS field can be used to complement a DSCP/traffic class field and provide a better mechanism for end-to-end QoS using IPv6. A service provider can use DSCP within its own administrative domain(s), and end users can set and maintain QoS using the methods described herein, thereby providing a framework for end-to-end QoS using IP packets.

2. 发明授权

US11438446B2 Load balancing and session persistence in packet networks 有权
公开(公告)号：US11438446B2
公开(公告)日：2022-09-06
申请号：US16815643
申请日：2020-03-11
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L29/06 , H04L69/22 , H04L67/1027 , H04L69/16 , H04L45/74 , H04L61/58 , H04L61/59
摘要： A node may generate a data packet comprising an Internet Protocol (IP) header and a destination options extension header (DOEH). The DOEH may comprise one or more data fields and an IP payload. The node may send the data packet to another node in a data network.

3. 发明授权

US10630817B2 Load balancing and session persistence in packet networks 有权
公开(公告)号：US10630817B2
公开(公告)日：2020-04-21
申请号：US15720727
申请日：2017-09-29
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L29/06 , H04L29/08 , H04L12/741 , H04L29/12
CPC分类号： H04L69/22 , H04L45/74 , H04L67/1027 , H04L69/16 , H04L69/161 , H04L61/6009 , H04L61/6013
摘要： A node may generate a data packet comprising an Internet Protocol (IP) header and a destination options extension header (DOEH). The DOEH may comprise one or more data fields and an IP payload. The node may send the data packet to another node in a data network.

4. 发明授权

US09826068B2 Load balancing and session persistence in packet networks 有权
公开(公告)号：US09826068B2
公开(公告)日：2017-11-21
申请号：US14331993
申请日：2014-07-15
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L29/06 , H04L29/08 , H04L12/741 , H04L29/12
CPC分类号： H04L69/22 , H04L45/74 , H04L61/6009 , H04L61/6013 , H04L67/1027 , H04L69/16 , H04L69/161
摘要： A node may generate a data packet comprising an Internet Protocol (IP) header and a destination options extension header (DOEH). The DOEH may comprise one or more data fields and an IP payload. The node may send the data packet to another node in a data network.

5. 发明授权

US09667555B2 Quality of service in packet networks 有权
公开(公告)号：US09667555B2
公开(公告)日：2017-05-30
申请号：US14630749
申请日：2015-02-25
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L12/857 , H04L12/851 , H04L12/801
CPC分类号： H04L47/2491 , H04L47/17 , H04L47/18 , H04L47/2408 , H04L47/2433
摘要： Methods and systems for providing quality of service over IP networks are disclosed. In one aspect, a flow label field of a header may be divided into first and second portions. The first portion defines a quality of service. The second portion identifies a message flow. Once the first portion defining the quality of service is established by the sending node, no nodes in the transmission path may change the quality of service value. Each node may route packets based on the quality of service field, or may modify the traffic class field of the header based on the quality of service and then route the packet based on the traffic class field. The QoS field can be used to complement a DSCP/traffic class field and provide a better mechanism for end-to-end QoS using IPv6. A service provider can use DSCP within its own administrative domain(s), and end users can set and maintain QoS using the methods described herein, thereby providing a framework for end-to-end QoS using IP packets.

6. 发明申请

US20210021531A1 Quality of Service in Packet Networks 有权
公开(公告)号：US20210021531A1
公开(公告)日：2021-01-21
申请号：US17010396
申请日：2020-09-02
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L12/857 , H04L12/801 , H04L12/851
摘要： Methods and systems for providing quality of service over IP networks are disclosed. In one aspect, a flow label field of a header may be divided into first and second portions. The first portion defines a quality of service. The second portion identifies a message flow. Once the first portion defining the quality of service is established by the sending node, no nodes in the transmission path may change the quality of service value. Each node may route packets based on the quality of service field, or may modify the traffic class field of the header based on the quality of service and then route the packet based on the traffic class field. The QoS field can be used to complement a DSCP/traffic class field and provide a better mechanism for end-to-end QoS using IPv6. A service provider can use DSCP within its own administrative domain(s), and end users can set and maintain QoS using the methods described herein, thereby providing a framework for end-to-end QoS using IP packets.

7. 发明授权

US10097455B2 Ascertaining per-hop network characteristics 有权
公开(公告)号：US10097455B2
公开(公告)日：2018-10-09
申请号：US15408068
申请日：2017-01-17
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L12/741 , H04L12/26 , H04L29/12
摘要： A tool that may be used for querying and obtaining per-hop information along a network path, and/or for verifying the host name of each hop against a data repository such as the DNS. The query and response may be transmitted in, e.g., the destination options header of data packets, such as an IPv6 destination options header.

8. 发明申请

US20150263965A1 Quality of Service in Packet Networks 有权
标题翻译：分组网络中的服务质量
公开(公告)号：US20150263965A1
公开(公告)日：2015-09-17
申请号：US14630749
申请日：2015-02-25
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L12/857 , H04L12/851 , H04L12/801
CPC分类号： H04L47/2491 , H04L47/17 , H04L47/18 , H04L47/2408 , H04L47/2433
摘要： Methods and systems for providing quality of service over IP networks are disclosed. In one aspect, a flow label field of a header may be divided into first and second portions. The first portion defines a quality of service. The second portion identifies a message flow. Once the first portion defining the quality of service is established by the sending node, no nodes in the transmission path may change the quality of service value. Each node may route packets based on the quality of service field, or may modify the traffic class field of the header based on the quality of service and then route the packet based on the traffic class field. The QoS field can be used to complement a DSCP/traffic class field and provide a better mechanism for end-to-end QoS using IPv6. A service provider can use DSCP within its own administrative domain(s), and end users can set and maintain QoS using the methods described herein, thereby providing a framework for end-to-end QoS using IP packets.
摘要翻译：披露了通过IP网络提供服务质量的方法和系统。在一个方面，标题的流标签字段可以被划分为第一和第二部分。第一部分定义了服务质量。第二部分标识消息流。一旦定义了服务质量的第一部分由发送节点建立，传输路径中的任何节点都不可能改变服务质量值。每个节点可以基于服务质量字段路由分组，或者可以基于业务质量修改报头的业务类别字段，然后基于业务类别字段来路由分组。 QoS字段可用于补充DSCP /业务类字段，并为使用IPv6的端到端QoS提供更好的机制。服务提供商可以在其自己的管理域内使用DSCP，并且最终用户可以使用本文描述的方法设置和维护QoS，从而为使用IP分组的端到端QoS提供框架。

9. 发明申请

US20150043583A1 Load Balancing and Session Persistence in Packet Networks 有权
标题翻译：分组网络中的负载平衡和会话持续性
公开(公告)号：US20150043583A1
公开(公告)日：2015-02-12
申请号：US14331993
申请日：2014-07-15
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L29/06 , H04L12/741
CPC分类号： H04L69/22 , H04L45/74 , H04L61/6009 , H04L61/6013 , H04L67/1027 , H04L69/16 , H04L69/161
摘要： Methods and systems for performing load balancing and session persistence in IP (e.g., IPv6) networks are described herein. Some aspects relate to a destination options extension header that may be defined as a load balancing session persistence option (LBSPO) for storing a client identifier and a server identifier for each of a client and a server during a session. Packets sent between the client and the server may include the LBSPO with the client and server identifiers. A load balancer with a virtual IP address of a target application can perform session persistence and assign a destination server to a client based on a preexisting session between the server and the client, as determined by the LBSPO information. While a target VIP node may process data packets based on the LBSPO information, once established, the LBSPO information may remain unchanged for the duration of the session.
摘要翻译：本文描述了用于在IP（例如，IPv6）网络中执行负载平衡和会话持续性的方法和系统。一些方面涉及可以定义为在会话期间为客户机和服务器中的每一个存储客户机标识符和服务器标识符的负载平衡会话持久性选项（LBSPO）的目的地选项扩展头。在客户端和服务器之间发送的数据包可能包括具有客户端和服务器标识符的LBSPO。具有目标应用程序的虚拟IP地址的负载平衡器可以执行会话持久性，并且基于由LBSPO信息确定的服务器和客户端之间的预先存在的会话向客户端分配目的地服务器。虽然目标VIP节点可以基于LBSPO信息来处理数据分组，一旦建立，LBSPO信息可以在会话的持续时间内保持不变。

10. 发明申请

US20220407948A1 Load Balancing and Session Persistence in Packet Networks 有权
公开(公告)号：US20220407948A1
公开(公告)日：2022-12-22
申请号：US17876074
申请日：2022-07-28
申请人： Comcast Cable Communications, LLC
发明人： Chia J. Liu
IPC分类号： H04L69/22 , H04L67/1027 , H04L69/16 , H04L45/74
摘要： A node may generate a data packet comprising an Internet Protocol (IP) header and a destination options extension header (DOEH). The DOEH may comprise one or more data fields and an IP payload. The node may send the data packet to another node in a data network.

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