公开(公告)号：US20230028147A1

公开(公告)日：2023-01-26

申请号：US17380828

申请日：2021-07-20

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L12/721

Abstract: Various example embodiments for supporting source routing are presented herein. Various example embodiments for supporting source routing may be configured to support source route compression for source routing. Various example for supporting source route compression for source routing may be configured to support communication of a source routed packet over a path from an ingress node to an egress node over a network, wherein the network includes a set of network elements having a respective set of network element identifiers sharing a common prefix, wherein the source routed packet has encoded therein a source route block including the common prefix and an offset list, wherein the offset list includes a set of offset values associated with respective ones of the network elements of the path and configured to be combined with the common prefix to recover the network element identifiers of the respective ones of the network elements of the path.

公开(公告)号：US11483236B2

公开(公告)日：2022-10-25

申请号：US16835971

申请日：2020-03-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L45/50 ,  H04L45/02 ,  H04L45/16 ,  H04L45/28 ,  H04L45/48

Abstract: Various example embodiments for supporting stateless multicast communications in a communication system are presented. Various example embodiments for supporting stateless multicast communications may be configured to support stateless multicast communications in a label switching network (e.g., a Multiprotocol Label Switching (MPLS) network, an MPLS—Traffic Engineered (TE) network, or the like) based on a network label space. Various example embodiments for supporting stateless multicast communications based on a network label space may be configured to support assignment, from a network label space of a network, of a set of labels for nodes of the network and for adjacencies of the network. Various example embodiments for supporting stateless multicast communications based on a network label space may be configured to support assignment of node labels from the network label space for nodes of the network and assignment of adjacency labels from the network label space for adjacencies of the network.

公开(公告)号：US20220210064A1

公开(公告)日：2022-06-30

申请号：US17135453

申请日：2020-12-28

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Pranjal Kumar Dutta

IPC: H04L12/741

Abstract: Various example embodiments for address registration in a communication system are presented. Various example embodiments for supporting address registration in a communication system may be configured to support address registration in-band in the data plane of the communication system. Various example embodiments for supporting address registration in-band in the data plane of a communication system may be configured to support address registration in-band in the data plane of the communication system based on use of a data plane header configured to support address registration in-band in the data plane of the communication system (e.g., based on use of a destination address field of the data plane header to indicate that the data plane header is being used for an address registration operation and use of a source address field of the data plane header to indicate the address(es) for which the address registration operation is to be performed).

公开(公告)号：US11368564B2

公开(公告)日：2022-06-21

申请号：US16580656

申请日：2019-09-24

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L69/326 ,  H04L45/50 ,  H04L47/36

Abstract: Various example embodiments for supporting fragmentation and reassembly of packets in communication networks are presented. Various example embodiments for supporting fragmentation and reassembly of packets in communication networks may be configured to support fragmentation and reassembly of labeled packets, such as Multiprotocol Label Switching (MPLS) packets or other types of labeled packets, in communication networks. Various example embodiments for supporting fragmentation and reassembly of labeled packets may be configured to support fragmentation and reassembly of labeled packets at various contexts of the labeled packets where the contexts of the labeled packets may be indicated within the labeled packets using sets of context labels for the contexts of the labeled packets.

公开(公告)号：US11362954B2

公开(公告)日：2022-06-14

申请号：US16366177

申请日：2019-03-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L47/10 ,  H04L12/46 ,  H04L12/66 ,  H04L45/16 ,  H04L45/50 ,  H04L45/741 ,  H04L47/70 ,  H04L67/142 ,  H04L69/164 ,  H04L69/22

Abstract: A router is configured for deployment in a first domain of a network. The router includes a processor and a transmitter. The processor is configured to access addresses of egress routers for a multicast flow that are partitioned into local addresses of egress routers in the first domain and external addresses of egress routers in a second domain of the network. The processor is also configured to prepend an explicit multicast route (EMR) to a packet in the multicast flow to form a first EMR packet. The EMR includes information representing the external addresses. The transmitter is configured to unicast the first EMR packet to an advertising border router (ABR) that conveys the multicast flow from the first domain to the second domain. In some cases, the router includes a receiver configured to receive another EMR packet from another router in another domain via a tunnel between the routers.

公开(公告)号：US20210306259A1

公开(公告)日：2021-09-30

申请号：US16835971

申请日：2020-03-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L12/723 ,  H04L12/761 ,  H04L12/753 ,  H04L12/703 ,  H04L12/751

Abstract: Various example embodiments for supporting stateless multicast communications in a communication system are presented. Various example embodiments for supporting stateless multicast communications may be configured to support stateless multicast communications in a label switching network (e.g., a Multiprotocol Label Switching (MPLS) network, an MPLS—Traffic Engineered (TE) network, or the like) based on a network label space. Various example embodiments for supporting stateless multicast communications based on a network label space may be configured to support assignment, from a network label space of a network, of a set of labels for nodes of the network and for adjacencies of the network. Various example embodiments for supporting stateless multicast communications based on a network label space may be configured to support assignment of node labels from the network label space for nodes of the network and assignment of adjacency labels from the network label space for adjacencies of the network.

公开(公告)号：US12126524B2

公开(公告)日：2024-10-22

申请号：US17030667

申请日：2020-09-24

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L45/28 ,  H04L41/0668 ,  H04L45/02 ,  H04L45/12 ,  H04L45/745 ,  H04L69/22

CPC classification number: H04L45/28 ,  H04L41/0668 ,  H04L45/12 ,  H04L45/745 ,  H04L69/22 ,  H04L45/02

Abstract: A network includes a first node having a processor that incorporates a U-turn indicator into a header of an Internet protocol (IP) packet for transmission along a first path towards a second node. The U-turn indicator indicates that the first node expects to receive the IP packet back from the second node. The first node also includes a transceiver that transmits the IP packet including the header having the U-turn indicator along the first path. In some cases, the transceiver (or another transceiver in another node) receives a packet comprising a U-turn indicator. The processor (or another processor in another node) detects the U-turn indicator in a header of the IP packet. The processor forwards the IP packet along a path to a destination node that does not include the node that originally transmitted the IP packet or drops the IP packet depending on whether an alternate path is identified.

公开(公告)号：US12040965B2

公开(公告)日：2024-07-16

申请号：US16781376

申请日：2020-02-04

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L45/16 ,  H04L9/40 ,  H04L12/08 ,  H04L12/46 ,  H04L45/50 ,  H04L45/745

CPC classification number: H04L45/16 ,  H04L12/08 ,  H04L12/4641 ,  H04L45/50 ,  H04L45/745 ,  H04L63/0272

Abstract: Various example embodiments for supporting multicast communications in a communication system are presented. Various embodiments for supporting multicast communications may be configured to support multicast communications of multiple virtual private networks over a single multicast distribution tree. Various embodiments for supporting multicast communications of multiple virtual private networks over a single multicast distribution tree may support communication of a packet of a virtual private network within a network, wherein the packet includes a set of tuples associated with a set of egress devices to which the packet is to be delivered via a multicast distribution tree supported within the network, wherein, for each of the egress devices, the respective tuple associated with the respective egress device includes a respective device identifier of the egress device that uniquely identifies the respective egress device within the network and a respective label assigned by the respective egress device for the virtual private network.

公开(公告)号：US20240214297A1

公开(公告)日：2024-06-27

申请号：US18088913

申请日：2022-12-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L45/03 ,  H04L45/12 ,  H04L45/50 ,  H04L45/74

CPC classification number: H04L45/03 ,  H04L45/12 ,  H04L45/50 ,  H04L45/74

Abstract: Various example embodiments for supporting autonomous path construction and routing in a communication network are presented. Various example embodiments for supporting autonomous path construction and routing in a communication network may be configured to support autonomous path construction based on flooding of path state advertisements within the communication network. Various example embodiments for supporting autonomous path construction and routing in a communication network may be configured to support autonomous path construction based on flooding of path state advertisements including information supporting construction of full sets of loop-free unequal cost paths between all pairs of network elements in the communication network. Various example embodiments for supporting autonomous path construction and routing in a communication network may be configured to support routing based on autonomously constructed paths that include loop-free unequal cost paths between pairs of network elements in the communication network.

公开(公告)号：US20240155046A1

公开(公告)日：2024-05-09

申请号：US17982752

申请日：2022-11-08

Applicant: Nokia Solutions and Networks Oy

Inventor： Pranjal Kumar Dutta

IPC: H04L69/22 ,  H04L69/16 ,  H04L69/321

CPC classification number: H04L69/22 ,  H04L69/161 ,  H04L69/321

Abstract: Various example embodiments for supporting loop detection in a communication network are presented. Various example embodiments for supporting loop detection in a communication network may be configured to support loop detection based on use of a recorded route bit string which may be inserted within packets for enabling detection of loops as the packets are communicated over the communication network. Various example embodiments for supporting loop detection in a communication network may be configured to support loop detection for a packet based on inclusion within the packet of a recorded route bit string having bit positions corresponding to nodes of the communication network where the bit positions may be set in a manner indicative of the nodes which have been traversed by the packet.