A packet transmission method is applied to a communication device including a first MPU, a second MPU, and an LPU. The first MPU is connected to the LPU through a first transmission channel. The second MPU is connected to the LPU through a second transmission channel. During packet transmission, a service flow packet is transmitted through the first transmission channel, and a non-service flow packet is transmitted through the second transmission channel. Therefore, the service flow packet and the non-service flow packet are processed by different MPUs, so that the service flow packet and the non-service flow packet do not compete with each other. In this way, transmission efficiency of the non-service flow packet is improved. In addition, when the first MPU is attacked by an abnormal service flow packet, the second MPU is not affected, and may normally perform operation and maintenance management.

A method for UE route selection policy (URSP) rule matching enhancement is proposed. When an application is executed, the upper layer of a UE sends the application information to URSP entity for matching a URSP rule. The UE finds an RSD of the matching URSP rule, and the UE tries to reuse an existing PDU session, e.g., the association of the application with the existing PDU session have certain exceptions. In one example, regarding DNN, S-NSSAI, SSC mode, and PDU session type, the above listed parameters in the RSD can either match with stored PDU session parameters of the existing PDU session or match with PDU session parameters requested by the UE during the PDU session establishment procedure.

A method (100) of route selection in a wireless communication system and a control system (40) is provided. The method includes selecting a route between a first node (1) and a second node (2) and comprises: —evaluating (110) a plurality of possible routes (R1, R2, R3, R4), at least one route (R2, R3, R4) including a third node (3, 4) between the first and the second node; and —selecting (160) the route that has the lowest latency among the possible routes. Especially the method (100) includes: —selecting (120) parameter settings for each link of the possible routes, said selecting (120) comprising; —selecting (130) the length of the cyclic prefix, —evaluating (140) combinations of the selected cyclic prefix and different settings of the at least one further parameter of the physical layer; —selecting (150) the parameter settings that has lowest estimated latency and fulfils at least one communication quality criterion.

A method (100) of route selection in a wireless communication system and a control system (40) is provided. The method includes selecting a route between a first node (1) and a second node (2) and comprises: —evaluating (110) a plurality of possible routes (R1, R2, R3, R4), at least one route (R2, R3, R4) including a third node (3, 4) between the first and the second node; and —selecting (160) the route that has the lowest latency among the possible routes. Especially the method (100) includes: —selecting (120) parameter settings for each link of the possible routes, said selecting (120) comprising; —selecting (130) the length of the cyclic prefix, —evaluating (140) combinations of the selected cyclic prefix and different settings of the at least one further parameter of the physical layer; —selecting (150) the parameter settings that has lowest estimated latency and fulfils at least one communication quality criterion.

Delivery of high quality video in an adaptive bit rate (ABR) download session is achieved using obtained using lower quality communication paths. The method involves detecting that an ABR download session of a video is in a steady-state condition. If so a further determination is made as to whether there is sufficient pre-fetch time available to download an (N+1)th video segment of the video using at alternative connection path through a virtual WAN having a lower quality than a first connection path through the virtual WAN. If sufficient pre-fetch time is available, the (N+1)th video segment is prefetched using at least the second connection path instead of the first connection path.

Some embodiments of the invention provide a method of facilitating routing through a software-defined wide area network (SD-WAN) defined for an entity. A first edge forwarding node located at a first multi-machine site of the entity, the first multi-machine site at a first physical location and including a first set of machines, serves as an edge forwarding node for the first set of machines by forwarding packets between the first set of machines and other machines associated with the entity via other forwarding nodes in the SD-WAN. The first edge forwarding node receives configuration data specifying for the first edge forwarding node to serve as a hub forwarding node for forwarding a set of packets from a second set of machines associated with the entity and operating at a second multi-machine site at a second physical location to a third set of machines associated with the entity and operating at a third multi-machine site at a third physical location. The first edge forwarding node serves as a hub forwarding node to forward the set of packets from the second set of machines to the third set of machines.

Some embodiments of the invention provide a method of facilitating routing through a software-defined wide area network (SD-WAN) defined for an entity. A first edge forwarding node located at a first multi-machine site of the entity, the first multi-machine site at a first physical location and including a first set of machines, serves as an edge forwarding node for the first set of machines by forwarding packets between the first set of machines and other machines associated with the entity via other forwarding nodes in the SD-WAN. The first edge forwarding node receives configuration data specifying for the first edge forwarding node to serve as a hub forwarding node for forwarding a set of packets from a second set of machines associated with the entity and operating at a second multi-machine site at a second physical location to a third set of machines associated with the entity and operating at a third multi-machine site at a third physical location. The first edge forwarding node serves as a hub forwarding node to forward the set of packets from the second set of machines to the third set of machines.

The present technology provides a system and method for implementing targeted collection of in-situ Operation, Administration and Maintenance data from select nodes in a Segment Routing Domain. The selection is programmable and is implemented by setting an iOAM bit in the function arguments field of a Segment Identifier. In this way only the nodes associated with local Segment Identifiers (Function field of a Segment Identifier) with an iOAM argument bit are directed to generate iOAM data. The iOAM data generated by target nodes may be stored in TLV field of the segment routing header. The Segment Routing packet is then decapsulated at a Segment Routing egress node and the Header information with the collected iOAM data is sent to a controller entity for further processing, analysis and/or monitoring.

The present technology provides a system and method for implementing targeted collection of in-situ Operation, Administration and Maintenance data from select nodes in a Segment Routing Domain. The selection is programmable and is implemented by setting an iOAM bit in the function arguments field of a Segment Identifier. In this way only the nodes associated with local Segment Identifiers (Function field of a Segment Identifier) with an iOAM argument bit are directed to generate iOAM data. The iOAM data generated by target nodes may be stored in TLV field of the segment routing header. The Segment Routing packet is then decapsulated at a Segment Routing egress node and the Header information with the collected iOAM data is sent to a controller entity for further processing, analysis and/or monitoring.

Systems and methods for connecting devices via a virtual global network across network fabrics using a network tapestry are disclosed. The network system comprises a first access point server in communication with a first backbone exchange server, a second access point server in communication with a second backbone exchange server, and a network tapestry comprising a first communication path connecting the first and second access point servers and a second communication path connecting the first and second backbone exchange servers.