32 results about "Qos assurance" patented technology

A method and apparatus where network-layer devices use host-provided, detailed, per-packet, semantic information (DPPS information), which describes the content, meaning, importance, and / or other attributes of particular application data and is associated with each packet, to provide enhanced network services. In some embodiments of the above method, network-layer devices use DPPS information that includes QoS-related information to provide fine-grained, content-aware, and / or complex QoS assurances or similar services. In some embodiments, network-layer devices use DPPS information to provide network-based, application-protocol-independent, rate-adaptation services. In some embodiments, network-layer devices use DPPS information to provide highly efficient, application-protocol-independent, publish / subscribe dissemination services.

The invention is suitable for the network communication field, and provides a communication service QoS (Quality of Service) assurance method in NAT (Network Address Translation) scene. The method comprises the following steps: an A-BGF (Access-Border Gateway Function) network element is controlled to generate agent SDP (Session Description Protocol) information according to calling SDP information when a user terminal issues a communication request, the SDP information is utilized to replace the calling SDP information to connect the user terminal and a called party, after the two communication parties are successfully connected, a PCRF (Policy and Charging Rules Function) network element is informed to conduct QoS resource reservation, an IP (Internet Protocol) address and a port of the user terminal, which are converted by NAT, from the A-BGF network element, are received, and the PCRF network element is informed to update the source address information of the QoS resource reservation to the IP address and the port of the user terminal, which are converted by NAT. The invention realizes communication service QoS assurance in NAT scene under the premise that the interface of the user terminal is not specially required.

The invention discloses a deep-space network routing method with a QoS (Quality of Service) assurance, and solves the problem in the prior art that deep-space network service requirements can not be satisfied. The method particularly comprises the following steps: acquiring all link information in the network at first, correcting the communication time slots, then bringing link transmission time delay and link transmission rate into consideration to calculate the transmission time slots, and finally, calculating the path time delay according to the path transmission time to select the minimal path as the optimal path. By adopting the method, the calculated and acquired path time delay is more accurate, the selected optimal path has the shortest time delay, and the QoS requirement for the time delay of the service can be satisfied while the service throughput is guaranteed; and the service transmission time can be set more reasonably, the data transmission blindness is small, the probability of false transmission due to disconnection of links when data is transmitted on the links is low, and the network performance is improved.

The present invention discloses a system and a method of dynamic QoS negotiation in NGN. The Resource and Admission Control Subsystem (RACS) provides intercommunication interfaces with Transport functional (TF) entity, Service Control Functional (SCF) entities, and Network Attachment Subsystem (NASS), and thereby, when a user terminal in NGN is to develop a service with QoS requirement, the RACS can obtain the QoS requirement parameters of a service, determine the admission control decision parameters in accordance with the QoS requirement parameters, and the RACS send the determined admission control decision parameters to the TF entity for execution, such that the QoS assurance for the service is realized.The present invention allows an end-to-end QoS negotiation in NGN in accordance with the availability of current transport network resources, and thereby can effectively improve the transport resource utilities. Therefore, the present invention can effectively ensure QoS of service transported in NGN.

The invention discloses a long distance CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) protocol with QoS (Quality of Service) assurance, a node in a communication channel executes the following steps: (1) entering a backoff stage after sending of the previous data packet is finished in a sending queue; (2) according to priority conditions of the data packets in the existing sending queue, extracting the data packet with the highest priority and arranging the extracted data packet at the head of the sending queue; (3) calculating a channel busy-to-idle ratio and a priority threshold corresponding to the data packet of the head of the sending queue; (4) after the backoff stage is ended, detecting the busy-to-idle ratio of the current channel, and comparing the priority threshold corresponding to the data packet of the head of the sending queue with the busy-to-idle ratio of the current channel, if the busy-to-idle ratio of the current channel is less than the priority threshold corresponding to the data packet, enabling the data packet to be accessed to the channel and sending the data packet, and returning back to the step (1). According to the long distance CSMA / CA protocol with QoS assurance provided by the invention, performance requirement of the data packet with high priority is satisfied through delay of access of the data packet with low priority, and hereby, a collision probability is reduced and a throughput is improved.

System and method for providing data transport Quality of Service (QoS) assurances in homogeneous and heterogeneous communication networks consisting of one or more communication interface types. The system includes Subnet Managers for managing the resources of nodes within the subnets and Flow Managers for managing the communication flows between the nodes. A Real-time Reservation Transport Protocol (RRTP) establishes the resource reservations and QoS transport services for the communication flow payload over the reserved paths. The communication flows are protected against topological variations in the network, such as from node mobility. QoS assurances are also provided to secure communication flows through interoperation with security protocols, such as Internet Protocol Security (IPsec), or encryption devices, such as High Assurance Internet Protocol Encryptor (HAIPE).

There is disclosed a technique for allowing a mobile terminal that has been handed over to quickly and continuously receive an additional service (e.g., QoS assurance) that had been received before the handover. According to the technique, when being handed over, a mobile terminal (MN) (10) selects, as a proxy, a node (QNE) (proxy) (68) that is located near a network AR (access router) (31) belonging to a subnet (30), into which the MN is moving, and that has an NSLP for the QoS. The MN then transmits, to the proxy, a message including a flow identifier and a session identifier that are related to a path (24) established with a CN (60) before the handover. The proxy transmits, to the CN, a message including these flow and session identifiers, then establishes, based on the result of a response to this message, a new path (34), and then finds a crossover node at which the two paths are joining.

A proxy server and a hierarchical network system and a distributed workload management method. According to one embodiment of this disclosure, the proxy server includes: a rate controller configured to, based on measured request-related information and service quality parameters relative to service levels of requests, periodically determine a dispatch rate for requests of each service level, wherein the sum of the dispatch rate for respective service levels is less than or equal to a predetermined rate; and a request dispatcher configured to dispatch the requests of the corresponding service level in accordance with the dispatch rate determined by the rate controller. One aspect of the disclosure realizes a low overhead, highly scalable, simple and efficient workload management system to achieve QoS assurance and overload protection.

A method and apparatus where network-layer devices use host-provided, detailed, per-packet, semantic information (DPPS information), which describes the content, meaning, importance, and / or other attributes of particular application data and is associated with each packet, to provide enhanced network services. In some embodiments of the above method, network-layer devices use DPPS information that includes QoS-related information to provide fine-grained, content-aware, and / or complex QoS assurances or similar services. In some embodiments, network-layer devices use DPPS information to provide network-based, application-protocol-independent, rate-adaptation services. In some embodiments, network-layer devices use DPPS information to provide highly efficient, application-protocol-independent, publish / subscribe dissemination services.

The disclosure includes a method for establishing a connection with QoS assurance. In the method, a router receives a first IPv6 packet for establishing a first connection, wherein the first IPv6 packet includes a first QoS requirement for the first connection in a hop-by-hop extension header of the first IPv6 packet. Then, the router modifies the first IPv6 packet by setting first information in the hop-by-hop extension header of the first IPv6 packet, where the first information indicates that the router meets the first QoS requirement. Furthermore, the router sends the modified first IPv6 packet to a second router based on a destination IP address of the modified first IPv6 packet.

The invention discloses a service-oriented intelligent vehicle vehicle network QoS guarantee method: topology discovery is performed when the vehicle is started, and parameter import of each node in the vehicle electronic and electrical architecture and vehicle network is completed; service and QoS demand registration is performed; when the application layer subscribes to the service Read QoS requirements; calculate and allocate network resources for subscribed services according to QoS requirements, formulate and issue corresponding forwarding and scheduling policies, and complete static configuration; update nodes and give feedback when QoS requirements are changed or added Node information, while calculating whether the remaining network resources in the network meet the changed or newly added QoS requirements; if so, send the configuration file and establish a connection; if not, renegotiate with the previously configured network resources , if the negotiation is successful, reconfigure the vehicle network resources while sacrificing part of the non-real-time stream, generate the corresponding configuration file to update the network configuration and nodes, and establish a connection; if the negotiation fails, a warning will be issued.

The present invention is applicable to the field of network communications, and provides a method for guaranteeing QoS of a communication service in a NAT scenario, including: when a user equipment initiates a communication request, controlling an A-BGF network element to generate proxy SDP information according to calling party SDP information, and replacing the calling party SDP information with the proxy SDP information to establish a connection between the user equipment and a called party; after a connection between both communication parties is successful, instructing a PCRF network element to perform QoS resource reservation; and receiving a NAT-translated-to IP address and a port of the user equipment from the A-BGF network element, and instructing the PCRF network element to update source address information for the QoS resource reservation to the NAT-translated-to IP address and the port of the user equipment. The present invention achieves QoS guarantee of a communication service in a NAT scenario without imposing any special interface requirement on the user equipment.

The invention discloses a method for classifying and isolating information based on integrated network security service architecture, which is characterized in that the traffic, control and management information in the network is classified and isolated; and all classes of data carry out independent routing switching and transmission in the network, have independent bandwidth resources and corresponding QoS assurance measures and have own channels without interference. The method has the following positive effects: the signaling system and the network management system operate relatively independently in the network and are not affected by the traffic flow and the mal-form packets, therefore, implementation of the systems can be effectively controlled even if the network traffic suffers from severe jamming, and meanwhile, the system messages are avoided from taking over the traffic bandwidth so as to affect the service quality of the traffic.

The invention discloses a deep-space network routing method with a QoS (Quality of Service) assurance, and solves the problem in the prior art that deep-space network service requirements can not be satisfied. The method particularly comprises the following steps: acquiring all link information in the network at first, correcting the communication time slots, then bringing link transmission time delay and link transmission rate into consideration to calculate the transmission time slots, and finally, calculating the path time delay according to the path transmission time to select the minimal path as the optimal path. By adopting the method, the calculated and acquired path time delay is more accurate, the selected optimal path has the shortest time delay, and the QoS requirement for the time delay of the service can be satisfied while the service throughput is guaranteed; and the service transmission time can be set more reasonably, the data transmission blindness is small, the probability of false transmission due to disconnection of links when data is transmitted on the links is low, and the network performance is improved.