47results about How to "Guaranteed Bandwidth Requirements" patented technology

Multiple buffer areas are realized by a piece of sharing memory unit in hardware, and managed by unified access arbitrator and allocation table of buffer area in order to provide high performance multiple buffer areas for buffer area access unit. When buffer areas are requested to access, the access arbitrator determines whether there is space allowed to assigning to buffer area requested first based on allocation table; if yes, the access is authorized, and corresponding update is made for the allocation table of buffer area. Buffer area is recovered in real time after its use is ended. The invention raises use ratio of whole memory unit, real time operation and throughput of buffer area.

The invention discloses a network virtualization method based on a software defined network (SDN). The network virtualization method comprises the steps of obtaining SDN topology information by a controller through detection in network initialization; creating a virtual network sheet, calling a virtual network generation module by the created virtual network sheet, adding host computers into the virtual network after network creation is finished, adding the host computers into the virtual network sheet, and communication between a certain host computer and another host computer is required, if a switch has a matched flow item, directly forwarding a data package, and if the switch has no matched flow item, transmitting the data package to the controller, calling an information interception module by the controller for intercepting the data package, calling an information analyzing module by the information interception module, waiting for a result which is returned from the information analyzing module, and determining whether to discard the data package. The network virtualization method can be used for flexibly creating a virtual network and is totally driven according to a user requirement and has relatively high expandability. Furthermore the invention provides a relatively good solution for improving network throughput and preventing competition of busy links.

The invention provides a QoS-based transmission method in a cognitive relay system. The method includes the steps of acquiring a preset number of service transmission source nodes with the highest priority, forming an information channel set according to the preset number of service transmission source nodes with the highest priority, selecting the source node needing the largest bandwidth according to the information channel set, distributing an information channel to the source node needing the largest bandwidth, and selecting a suitable relay node for a destination node according to the distributed information channel. According to the QoS-based transmission method in the cognitive relay system, the source node needing the largest bandwidth is selected from the preset number of service transmission source nodes with the highest priority, and the information channel is distributed to the source node needing the largest bandwidth; services are transmitted through the information channel distributed to the source node, a relay is selected for service transmission of the source node according to an information channel coefficient matrix, therefore, bandwidth requirements are met, user time delay is minimized, the error rate of the system is reduced, and QoS requirements of a user are met on the whole.

The invention relates to the technical field of cloud calculation, in particular to a virtual machine and network bandwidth joint allocation method based on multi-QoS grouping, which comprises the following steps: constructing a task model based on multi-QoS grouping; sorting all the application program requests according to the QoS levels so as to form request queues of the application programs;sequentially taking out the application programs from the request queue, and allocating virtual machines to the application programs by applying a virtual machine allocation strategy according to resource requirements of the application programs; and performing network bandwidth allocation by using a network bandwidth dynamic allocation strategy according to the link and flow information allocatedby the virtual machine. According to the method, the calculation resource parameters and the QoS parameters are comprehensively considered, the QoS requests of the application programs can be accurately graded. The bandwidth requirements of the application programs with high QoS grades can be well guaranteed by adopting a combined virtual machine allocation strategy and a dynamic bandwidth allocation strategy. The efficiency is improved.

The invention discloses a service function chain deployment method based on packet loss rate optimization. The method comprises the steps of performing undirected graph model conversion on a physicalnetwork; performing initialization by adopting an ant colony algorithm; starting iteration, and finding a next landing place by ants according to a state transmission rule in each iteration; performing feasibility judgment on the m deployment schemes through constraint conditions; comparing the local optimization deployment scheme of each iteration of the ant colony algorithm with the local optimization scheme of the previous iteration, leaving a current optimal local solution SC, and adding the current optimal local solution SC into the global optimization deployment scheme Sb; executing global pheromone updating according to the global pheromone updating rule to obtain global pheromones of the global optimal deployment scheme during the iteration; and if the maximum number of iterationsis reached, finding out a final optimal solution from the global optimal deployment scheme Sb, and outputting the optimal solution. According to the method, the end-to-end packet loss rate after the SFC is deployed to the physical network can be reduced, and meanwhile, the end-to-end delay and bandwidth requirements of the SFC are ensured.

The invention discloses a service configuration method of an optical network unit, which relates to the technical field of network communication. A service volume high-proportion link system is adopted to transmit order information of a user, the order information is provided as feedback to a total system, the total system allocates orders to corresponding subsystems according to order custom classification, and the subsystems complete order processing and corresponding order hardware information configuration through the service order priority, and finally transmit the SN number to complete configuration of optical fiber network unit equipment. The service configuration method solves the problems that an existing network service configuration method cannot adapt to the influence caused bythe increase of the user volume and the number of various service types, and corresponding service scheduling is difficult.

The embodiment of the invention provides a service quality improving method. The method includes steps: receiving a first service quality improving request transmitted by first user equipment, whereinthe first service quality improving request is used for requesting improvement of the service quality between the first user equipment and second user equipment, and the first service quality improving request carries recognition identifiers and service quality types of the first user equipment and the second user equipment; determining a service quality requirement according to the first servicequality improving request; and transmitting the service quality requirement to a policy and charging function entity of the first user equipment and the second user equipment, determining a policy and charging control rule through the policy and charging function entity, and then transmitting the policy and charging control rule to a gateway accessed to the first user equipment and the second user equipment through the policy and charging function entity to improve the service quality of the first user equipment and the second user equipment. According to the method, the service quality between multiple pieces of user equipment executing wireless services can be improved.

The invention discloses a method, a device and a system for reducing energy consumption of an xDSL (x digital subscriber line) subscriber board. The method includes acquiring the maximum downlink service bandwidth provided to subscribers by a number allocation subscriber port, downlink signal to noise ratio allowance in subscriber port line connection parameters, and transmission mode information in line templates bound by the subscriber port; judging whether the downlink signal to noise ratio allowance is larger than a preset value or not, reducing the maximum downlink nominal total transmission power if yes, or configuring the maximum downlink nominal total transmission power as downlink transmission power in line connection parameters of the current port; calculating the minimum distortionless power supply voltage required by a line driver corresponding to each number allocation port under the current binding template configuration according to the maximum downlink nominal total transmission power and the transmission mode, and comparing each minimum distortionless power supply voltage to find out a maximum value; and controlling output voltage of a power source supply module of the line driver to be the maximum value.

The embodiment of the present invention discloses an application-based flow control method and a flow controller. The method includes: identifying the type of a received data packet; when the data packet is an interactive data packet, including bandwidth control and In the first flow control rule of delay control, the data packet is stored in a high-priority storage queue after flow control is performed; when the data packet is a normal type data packet, according to the preset second flow control rule, The data packets are stored in a low-priority storage queue after flow control is performed; and the data packets are output in sequence according to the priority levels of the storage queues. By subdividing the flow control rules into the first flow control rules and the second flow control rules, the invention performs flow control on the identified interactive data packets and normal data respectively, so as to ensure the bandwidth and delay of the interactive data packets. requirements, and will not affect the transmission of non-interactive normal data packets, which improves the user's application access experience.

A method and an apparatus for processing a bandwidth capacity of a multilink point-to-point protocol (MLPPP) group are provided by the present invention, and the method includes the following steps of: counting the number of point-to-point protocol (PPP) links being up and bundled in an MLPPP group by statistics; judging whether the number of the PPP links being up is less than a threshold; and in case that the number of the PPP links being up is less than the threshold, prompting that the current bandwidth of capacity of the MLPPP group is not sufficient for the bandwidth requirement. With the present invention, the processing capacity of the system is increased, and the user experience is improved.

The embodiment of the invention discloses a method for transmitting service date in P2P network; the method is that when a user node transmits data, the data which are provided with bandwidth requirements are preferably scheduled; the transmission velocity is confirmed according to the bandwidth requirements and the data are transmitted to routing nodes according to the transmission velocity; when the routing nodes forward data, the data which are provided with bandwidth requirements are preferably scheduled and transmitted to a next hop node. The embodiment of the invention also discloses a system for transmitting service data in the P2P network and user node equipment and routing node equipment. By adopting the invention, the bandwidth requirements for service transmission can be guaranteed.

The present invention provides a QoS-based transmission method in a cognitive relay system, comprising: obtaining the source nodes of the highest priority preset value transmission services, and according to the highest priority preset value source nodes of the transmission services , to form a channel set, select and allocate a channel for the source node according to the channel set, and select a suitable relay node for the destination node according to the allocated channel. The present invention provides a QoS-based transmission method in a cognitive relay system, and selects the source node with the largest required bandwidth for the source nodes of the highest priority preset value transmission services, and allocates a channel for the source node; Transmit services through the channels allocated for the source node, and select relays for the source node transmission services according to the channel coefficient matrix, thereby ensuring bandwidth requirements, minimizing user delays, and reducing the bit error rate of the system as a whole. Guarantee the user's QoS requirements.

The present invention discloses a method for reducing power consumption on an xDSL subscriber board, including: obtaining a maximum downlink service bandwidth that a registered user port provides for a user, a downlink signal-to-noise ratio margin in line connection parameters of the user port, and transmission mode information in a line template bound to the user port; determining whether the downlink signal-to-noise ratio margin is larger than a preset value, if yes, reducing a maximum downlink nominal total transmission power; otherwise, configuring the maximum downlink nominal total transmission power as a downlink transmit power in line connection parameters of the current port; calculating, according to the maximum downlink nominal total transmission power and transmission mode, a minimum undistorted power supply voltage required by a corresponding line driver of each registered user port under the current configuration of the bound template, comparing minimum undistorted power supply voltage values, to find the largest value; and controlling an output voltage of a power module of a line driver equaling to the largest value.

The present invention requests protection of a routing algorithm for guaranteeing QoS (Quality of Service) in an SDN-based data center network. Aiming at the problems of high transmission delay and link congestion of user terminals in the data center network, this method proposes a routing algorithm to ensure QoS in the data center network. The high-priority data flow adopts the delay guarantee algorithm: find the path with the smallest data plane delay and deliver the flow table; while the low-priority data flow that requires high bandwidth adopts the bandwidth guarantee algorithm: according to the bandwidth of the data flow Dynamic bandwidth adjustment is required; thereby effectively guaranteeing user QoS and improving resource utilization in the data center network.

Embodiments of the invention provide a service flow aggregation method and device. The method comprises the following steps of computing a preset attribute value and traffic of each service flow for the service flows which reach the same source and the same target within the preset time bucket; dividing the service flows with the similarity of the preset attribute values into one group to obtain a pre-divided service flow group, wherein the similarity of the preset attribute values is that the preset attribute values conform to predetermined similar conditions; and respectively carrying out service flow aggregation on each obtained pre-divided service flow group to obtain a target service flow group which is about to make a request for a forwarding path to a controller. In a service flow aggregation process provided by the embodiments of the invention, the preset attribute values of the service flows in each pre-divided service flow group are similar, so that the preset attribute values of the service flows in the target service flow group are also similar. Meanwhile, the total traffic of the service flows in the target service flow group is not greater than a preset threshold. Therefore, the proper path is subsequently distributed to the target service flow conveniently and effectively, and compared with the prior art, the effectiveness of aggregation is improved.