30results about How to "Improve link utilization" patented technology

A call services manager and methods for improving the quality and efficiency of voice of Internet Protocol (“VOIP”) calls are provided. In an embodiment a method to improve communication link utilization on a call requiring the use of a central service platform is provided. An additional method is provided to validate caller identification information exchanged between originating and terminating communication devices in an IP voice network. In a further aspect of the invention, a method using a call services manager is provided to dynamically switch from one call route to another based on quality of service considerations. A call services manager is also provided. The call services manager is a software proxy that can reside at any type of network element. The call services manager includes software modules to implement the above methods for improving VOIP quality, and can include other call service and quality improvement modules.

The invention provides a link adaptation-based heterogeneous network TCP congestion control method. According to the method, an adaptive growth factor is introduced to an exponential type window growth function, so that window growth rate can be matched with link status, and in a packet loss differentiation strategy, an adaptive queue threshold is adopted to improve the performance of a TCP in a wireless environment; the window growth rate and a back-off strategy are adaptively adjusted according to links, so that the degradation of the transmission performance of the TCP caused by different link bandwidth, the difference of time delay and high packet loss can be avoided; a strategy for accelerating the convergence of a congestion window is adopted, and only a transmitting-end TCP needs to be modified, and therefore, the method can be gradually deployed on and applied to the Internet; and according to performance analysis and evaluation, the fairness of TCP congestion control algorithms, the utilization rate of the links and the fairness of end-to-end round-trip delay can be improved.

In the present invention, by constructing a passive optical distribution node, multiple servers connected to the same passive optical distribution node form a computing cluster, and the computing cluster is used as a basic unit to form a data center electro-optical hybrid double-layer access network to realize data center The network access function of the internal server. Through the passive optical distribution node, the traffic aggregation of m servers in a computing cluster is realized, and the high link utilization rate of the connection link between the aggregation switching interface of the passive optical distribution node and the switching interface of the inter-cluster switch is realized; the computing cluster can be passed through The intra-cluster channel realizes direct communication of intra-cluster servers without forwarding by electrical switching equipment, which reduces the forwarding delay of inter-cluster data communication; the network of the present invention can greatly reduce the number of electrical switching equipment in the access layer network, reduce network power consumption, simplify The complexity of the layout and wiring of the upper network; at the same time, the server's dual transceiver network interface card is equipped with tunable transceivers, which can flexibly configure network bandwidth according to real-time network load.

The invention discloses a gateway used in satellite communication and a method for enhancing TCP performance. The method comprises the following step: dividing an entire transmission path between a terminal located on the ground and the terminal of cosmic space into several segments according to a transmission path characteristic, wherein a satellite communication link segment between the ground gateway and the space gateway in the several segments adopts an optimized TCP protocol and the rest segments adopt a TCP protocol; the optimized TCP protocol is any protocol which is suitable for transmitting data on the path with long delay, a high error rate and asymmetric bandwidth. The transmission path characteristic comprises a time-delay characteristic, an error code characteristic and a channel symmetry characteristic. According to the invention, based on the method, a satellite communication link between the ground gateway and the space gateway adopts a SCPS-TP protocol to establish TP connection, carry out TP data transmission and break the established TP connection. On two side of the gateway, the traditional TCP transmission protocol is continuously used. By using the gateway and the method of the invention, original equipment does not need to be modified and the TCP transmission protocol is completely compatible.

The invention discloses a framing and interconnection transmitting method in an electricity utilization information collecting system. The framing and interconnection transmitting method in the electricity utilization information collecting system comprises the following steps: setting the length of a single frame after framing according a transmitting mechanism, and expressing that the frame is a complete frame or a subsequent frame by 'frame tagging bits'; and reading descending data of electricity quantity, electric energy meter information and the like in an intelligent electric energy meter into a buffer region of a collector, judging the completeness of a data frame by control codes, and assembling the data frame in the collector. The electric energy meters manufactured by different meter manufacturers have different framing lengths, but the integrity of the data frame can be determined only according to the tagging bits, and the frame losing and frame assembling errors can be prevented, so that the collector can be suitable for the electric energy meters of all manufacturers, and the interconnection and communication properties with the electric energy meters are improved. By adopting the framing interconnection transmitting method in the electricity utilization information collecting system, a low-voltage electricity utilization information collecting system is introduced for the framing transmitting method, so that the ascending data constant-length framing transmission of the collector is realized, and the transmission velocity and the link utilization ratio are improved.

According to some embodiments, a method for use in a user equipment (UE) of resuming a radio bearer in a wireless communication network comprises: establishing a radio resource control (RRC) connection with a first network node; receiving a connection suspend message from the first network node; storing a configuration of a radio bearer associated with the RRC connection; suspending the radio bearer associated with the RRC connection; receiving a connection resume message; determining whether the connection resume message includes configuration information for NR packet data convergence protocol (PDCP) for the suspended radio bearer; upon determining the connection resume message includes configuration information for a NR PDCP, configuring the suspended radio bearer with the configuration information; and resuming the suspended radio bearer.

The invention provides a data transmission method between data centers. The data transmission method between the data centers includes the following steps that a first compressed data package is obtained after first data to be transmitted are compressed by a first server of a first data center and sent to a first acceleration device through a first interchanger, the first compressed data package is accelerated through the first acceleration device, the first acceleration device sends the first accelerated compressed data package to a second interchanger of a second data center through the first interchanger, the second interchanger sends the first compressed data package to a second acceleration device, the second acceleration device restores the first accelerated compressed data package to obtain the first compressed data package, and the first compressed data package is sent to a second server through the second interchanger. The data transmission method between the date centers can achieve flow control aiming at different application programs and has high efficiency and usability. The invention further discloses a data transmission system and a subsystem of the data transmission system.

The present invention relates to a satellite optical burst switching conflict resolution scheduling implementation system and method, according to the network topology of the space-based broadband transmission backbone network and the status of each switching node, through the scheduling mode of pre-allocation of network resources, in the space-based broadband transmission backbone network The boundary controls the data that will enter the space-based broadband transmission backbone network for transmission and exchange, pre-plans the exchange time and forwarding path of each optical burst data entering the space-based broadband transmission backbone network, and realizes the optical burst data exchange of the space-based broadband transmission backbone network conflict resolution scheduling. The optical burst data of the space-based broadband transmission backbone network is generated by the electrical domain. After the electrical-optical conversion is completed at the edge node of the backbone network, it enters the backbone network for optical burst exchange. After reaching the destination edge node, the optical-electrical conversion is completed, and then the data is sent to the processing terminal. , to complete the data routing exchange process. The system utilizes network resources to resolve conflicts in satellite optical burst switching through pre-planning and scheduling.

The invention discloses a path management method and device based on the multi-path transmission protocol MPTCP, wherein the method includes: obtaining the transmission status information of each TCP sub-path in the MPTCP connection; The QOS value of the TCP sub-path; determine the TCP sub-path whose transmission quality deteriorates according to the QOS value, and then set the TCP sub-path to a standby state. The method and device of the present invention can quantify the communication quality of each path as QoS according to the performance comparison of each path, and detect the path whose communication quality changes during the communication process through the value of QoS, and analyze each path in real time. The path parameters of MPTCP ensure that the transmission path used in the network can achieve the maximum throughput and bandwidth utilization, make the network throughput change more smoothly, and improve the link utilization, throughput and robustness of MPTCP.

The invention discloses a satellite network active queue management method based on the packet size, which is characterized in that it comprises the following steps: S1: acquiring the packet size of just arrived packet data; S2: calculating the packet loss probability influence factor based on the packet size according to the packet size The value of the function; S3: calculate the packet loss probability pz applicable to the PID controller of the satellite network, calculate the total packet loss probability p of the router according to the value of pz and the packet loss probability influence factor function, set the size of the router cache as qlim, if q(k)>qlim, discard the packet data; if q(k)≤qlim, the probability of discarding the packet data is p; S4: put the undiscarded packets into the queue for queuing. The present invention calculates the total packet loss probability of the router according to the different packet sizes, that is, to achieve the purpose that larger packets have a smaller packet loss probability, and smaller packets have a larger packet loss probability, so as to protect larger packets. data pack.

The invention discloses an MPTCP-based congestion control method and device, wherein the method includes: establishing an MPTCP connection, and allocating a respective buffer area for each TCP sub-flow in the MPTCP connection; buffering each TCP sub-flow Estimate the area occupancy rate; determine the congestion level of the TCP sub-flow according to the buffer area occupancy rate, and adjust the transmission rate of the TCP sub-flow based on the congestion level. The MPTCP-based congestion control method and device of the present invention divides the buffer area for each sub-flow, and then accurately detects whether there is congestion according to the usage ratio of the buffer area of ​​each sub-flow, and performs traffic regulation according to the degree of congestion, while taking into account MPTCP transmission The fairness makes the network throughput change more smoothly, and improves the link utilization, throughput and robustness of MPTCP.

The invention belongs to the technical field of avionics, and discloses a method for processing bursts of critical services in an airborne avionics network. The method for processing bursts of critical services in the airborne avionics network is based on business planning and partition scheduling of a TTE network The mechanism divides the time axis into multiple basic periods, and each basic period is divided into two sections: the TT segment that only transmits TT and the ET segment that transmits RC / BE. The present invention solves the problem that the network carries burst messages without causing packet loss through the replacement of key burst services and the one-way conversion of downgrading priority. The optimized ET scheduling method is based on the level of burst services, which not only ensures The deterministic delay of the key services sent will not bring much delay impact on the original TT and RC services, and also improve the link utilization rate of the TT segment.