36results about How to "Reduce the possibility of packet loss" patented technology

The embodiment of the present invention discloses a method and device for distributing traffic, including: the first network node calculates the first packet loss rate of the first forwarding tunnel within a preset period; when the first packet loss rate is greater than the first packet loss rate When a predetermined threshold is reached, the rated bandwidth of the first forwarding tunnel is reduced by the first predetermined bandwidth to obtain the first available bandwidth; when the forwarding traffic of the first forwarding tunnel exceeds the first available bandwidth, the excess forwarding The traffic is distributed to the second data link for forwarding. It can be seen that the first network node reduces the available bandwidth of the first forwarding tunnel to the second when the packet loss rate of the first forwarding tunnel is relatively large. An available bandwidth, because the first available bandwidth is smaller than the original available bandwidth of the first forwarding tunnel shown, the forwarded traffic will exceed the first available bandwidth earlier, which advances the offloading of the first network node offloading traffic timing, reducing the likelihood of severe packet loss before traffic is diverted.

The invention discloses a flow control processing method, which comprises the following steps that: a local radio link protocol (RLP), after a periodic relative timer is due, calls a function interface of a local layer two relay (L2R) to analyze a protocol data unit (PDU) sent by a remote end to obtain an analysis result; the local L2R judges whether the occupied space of a local receiving sharedbuffer area exceeds a preset threshold, and performs the flow control and removes the flow control if the occupied space of the local receiving shared buffer area exceeds the preset threshold; otherwise, the local L2R judges whether a flow control signal from the remote end is received after writing data into the local receiving shared buffer area according to the analysis result, and performs theflow control and removes the flow control if the flow control signal from the remote end is received; otherwise, whether the occupied space of the local receiving shared buffer area exceeds the preset threshold is judged, and the steps of sending the flow control signal and removing the flow control are executed if the occupied space of the local receiving shared buffer exceeds the preset threshold; and otherwise, the data is sent to the remote end. The utilization of the method can improve the flow control performance and reduce the resource consumption of the system.

The invention discloses an optimization method for wireless mobile network route selection, and belongs to the field of wireless mobile networks. The specific technical scheme includes: according to the number of neighbors of network nodes, dynamically defining local areas in a network in real time, partitioning the nodes with the number of the neighbors larger than a defined value into the local areas with large intensity, routing the nodes in the local areas according to network topology of the local areas of current sending nodes and based on a unisource shortest route, and routing the nodes outside the local areas by adoption of a routing protocol based on geographic locations; and if routing fails, the sending nodes store messages to be sent, and after T time, performing the routing selection again. The optimization method for the wireless mobile network routing selection can be applied to high dynamic wireless mobile networks including vehicle-mounted self-organization networks and the like. According to the optimization method for the wireless mobile network routing selection, the routing based on the geographic locations is fully combined with the routing based on the network topology, the routing based on the geographic locations and the routing based on the network topology are called according to occasions, a message delivery success rate is increased, time delay is reduced, and overall performance of the network is enhanced.

Embodiments of the present invention provide a system maintenance method and a network switching device, which are used to avoid connecting a heartbeat line, reduce packet loss of heartbeat data packets, and implement a cross-operating system HA solution. The method includes: the network switching device determines that the heartbeat data packet sent by the primary working device through the established service link with the network switching device is not received within a preset time, and determines that the primary working device is faulty; and , the network switching device receives the heartbeat data packet sent by the standby working device through the established service link with the network switching device, and determines the normal running standby working device according to the received heartbeat data packet; A backup working device for taking over the main working device is determined from the normally operating backup working devices; the network switching device sends service data to the backup working device for taking over the main working device.

The embodiment of the application discloses a data transmission method and a communication device. The method in the embodiment of the present application includes: the communication device obtains the dequeue information, and the dequeue information indicates the queue that is requested to output in the communication device and the target data volume for each queue to output once, the communication device maintains a burst value, and based on the burst value Manage the target data volume so that the target data volume is not greater than the burst value. The communication device reads the sub-packet descriptor PD according to the queue. The sub-PD is obtained by dividing the first PD. The sub-PD includes target description information for indicating the target data packet. The first PD includes first description information for indicating a first data packet set, the first data packet set includes a target data packet, the first data packet set and sub-PDs are stored in a packet cache, and the packet cache includes a dynamic random access memory DRAM , the first PD is stored in the control buffer, the control buffer includes a static random access memory SRAM, and the communication device determines and sends the target data packet according to the sub-PD.

The present application provides a handover method, device and system in a wireless communication system. The source base station receives the first data packet from the core network device; the target base station receives the second data packet from the core network device, the second data packet is a copy of the first data packet, and the first The data packet and the second data packet respectively include a first index; the source base station sends first indication information to the target base station, and the first indication information indicates a mapping relationship between the first index and the second index; The source base station, in response to the first data packet, sends a third data packet to the user equipment UE; the target base station, in response to the second data packet, sends a fourth data packet to the UE, the The third data packet and the fourth data packet respectively include the second index.

Embodiments of the present invention provide a data communication method, control device, and node, which relate to the communication field, and reduce the possibility of packet loss while completing message transmission, and improve the success rate of message transmission. The specific solution is: obtain the message transmission path, perform the operation of simultaneously delivering the corresponding flow entry to each node on the path, and determine whether the operation of simultaneously delivering the corresponding flow entry to each node on the message transmission path If successful, if the operation fails, perform the steps of obtaining the message transmission path, the step of delivering the flow entry to each node at the same time, and the step of judging whether the delivery is successful, until each node successfully receives the corresponding flow entry; If the operation is successful, an activation flow entry message is issued to the head node, instructing the head node to execute the received flow entry, so that each node transmits a message according to the received corresponding flow entry. The invention is used for data communication.

Embodiments of the present invention provide a data flow routing method and device. Wherein, the method includes: receiving a congestion notification message sent by the first Spine device, wherein the congestion notification message is sent by the first Spine device when congestion occurs at the outgoing port of the forwarding target data flow, and the congestion notification message is Carry the flow identification of the target data flow, the outer layer destination IP address and the rate; send the bandwidth query message carrying the outer layer destination IP address to each second Spine device, so that each second Spine device determines the same as the outer layer destination IP address The remaining bandwidth of the corresponding egress port, and carry the remaining bandwidth in the bandwidth notification message and send it to the first leaf device; receive the bandwidth notification message sent by each second spine device, and send the remaining bandwidth greater than the rate of the target data flow A second spine device is determined as the next-hop device for sending the target data flow. It can reduce the possibility of data flow packet loss caused by data flow congestion.

The invention provides a simulation evaluation system of a mapping mechanism under IPv6, comprising: a data processing module, including: an acquisition sub-module for obtaining the direction attribute of a data packet for input original data; a conversion sub-module for converting The data packet is converted from IPv4 format to IPv6 format; the encapsulation router module includes: a mapping query sub-module, which is used to determine whether the mapping information is hit in the cache when receiving the data packet, and if not, send a query to the distributed mapping system , and trigger the discarding submodule; the discarding submodule is used to perform the discarding operation of the data packet according to the direction attribute; the distributed mapping system module is used to respond to the query according to the instantiated distributed mapping system; record A module, configured to obtain and record the mapping cache hit information of the encapsulation router module, and the query response information of the distributed mapping system module. The invention is used to realize the evaluation of the conventional function of the mapping mechanism under the IPv6 edge network address.

The invention belongs to the technical field of maintenance or management devices, and discloses a layered network access management method and system for aircraft formations. The main content includes initializing aircraft formation network parameters; identifying aircraft node capability status information; using node capability status information to define node synthesis Performance parameter index; construct the whole network node capability visual map according to the comprehensive performance parameter index; select the formation network initiation node according to the node capability visual map combined with geographical location area considerations; according to the principle of minimum hops and "sleeping" state multi-path based on geographical location information The pathfinding method completes the control information interaction between the network entry initiating node and the main topology central control node; the network entry initiating node notifies the information in the formation after receiving the network entry response, so that each node updates the local information domain, and the formation network access is completed. The invention obtains the maximum network access efficiency at the lowest cost, improves the comprehensive performance of formation network access, guarantees the QoS requirement of network communication, and improves the efficiency and quality of task completion.

The embodiment of the present invention proposes a video group call method and device in broadband trunking communication. The method includes: receiving a video group call request including the group number of the video group; establishing a video group call for members in the video group based on the video group call request, and pushing the video to the video group based on the multicast downlink bearer When it is determined that the user terminal (UE) is a member of the video group and the signal quality of the UE does not meet the predetermined standard, a video single call is established for the UE, and the video is pushed based on the unicast downlink bearer to the UE. The embodiment of the present invention provides video single call and analog video group call for users with poor signal quality, does not affect the multicast bearer of video group call, has limited impact on the capacity of the base station, and at the same time ensures service quality, increases transmission reliability, and reduces delay , to improve coverage.