Presented is a system and methods for routing Stream Control Transmission Protocol (SCTP) between a client and a back-end server by a front-end server operating transparently between the client and the back-end server. The front-end server uses a distribution key created by the front-end server to route the SCTP packets to the proper destination. The distribution key is comprised of a client SCTP port number, a back-end server SCTP port number and a back-end server Initiate-Tag. The front-end server arbitrates clashes between distribution keys of different back-end servers by replacing the back-end server generated SCTP Initiate-Tag with a front-end server generated SCTP Initiate-Tag.

Load balancing sctp associations using vtag mediation

The invention discloses a method for reducing an influence of data packet disorder on stream control transmission protocol (SCTP) multipath transmission. The method comprises the following steps of: (1) acquiring metric values of paths according to the path bandwidth, the delay and the packet loss ratio, measured in real time, of each independent path; and performing path scheduling and data packet distribution according to the metric values; and (2) judging a path which loses a data packet by using a transmitting terminal through an SACK block transmitted by a receiving terminal and carryingout end-to-end path-based data packet rapid transmission. The method can effectively reduce the influence of the data packet disorder on the SCTP multipath transmission, and can improve the performance of SCTP-based end-to-end multipath.

Method for reducing influence of data packet disorder on SCTP multipath transmission

The invention relates to a multi-path transmission control terminal and a method for supporting multi-service data transmission, and belongs to the technical field of network communication. The terminal is arranged on an end point of data transmission and comprises a multi-path session management module, a path management module, a flow division module, a path selection module, a substream sending control module, a substream receiving control module, a rectification recombination module, a path transmission quality report module and a path evaluation module. When data stream of an upper application is received, the data stream is divided into stream blocks, a path is selected for each stream block, stream blocks dispatched to the same path form a substream, the stream blocks are further divided into transmission units and are packaged into multi-path transmission packages and are transmitted to an opposite terminal, according to the path transmission quality fed by the opposite terminal, a path selection strategy is dynamically adjusted; when the multi-path transmission data packages are received, substream data is recombined and is further recombined into data streams and the data streams are transmitted to the upper application. The terminal and method can meet different transmission requests of various business types, and the multi-path transmission efficiency is improved.

Multi-path transmission control terminal and method for supporting multi-service data transmission

The invention discloses an MPTCP data scheduling method based on forecast arrival time. According to the method, after data packages are transmitted from an application layer, a dynamic RTT value is obtained according to current receiving package information, a real-time dynamic transmitting period is extracted according to the number of packages in a current network, the transmission time of the last data package and the receiving time of a last receiving package, in the end, the time of the data packages transmitted from each path to arrive at the receiving end is forecasted by comprehensive considering of the RTT value, the transmitting period and the number of the transmitted packages in a current path, and therefore the correct path is selected so as to achieve the purpose of receiving end sequential arrival. The MPTCP data scheduling method enables the RTT value and the transmitting period to be mixed together to obtain a dynamic smoothing parameter, and has the advantages of being capable of increasing the transmission rate and stabilizing the throughput capacity and suitable for being used in the aspect of data scheduling in the MPTCP transmission field.

MPTCP data scheduling method based on forecast arrival time

Dispatching method and system for data packet of sender in MPTCP (Multipath TCP (Transmission Control Protocol))

The invention provides a unified network home information diffusing method by using a border gateway protocol (BGP). The invention is characterized in that an access identifier of a terminal comprises a field which is the same as the autonomous number of the home autonomous system for identifying the home domain; the routing upgrading of the border gateway protocol comprises switching routing identifiers of an identifier mapping server of the initial autonomous system; an access switching router reads and maintains the switching routing identifiers capable of arriving at the identifier mapping server of the autonomous system from the border gateway information. The invention can simplify the diffusion of mapping information, show the consistency relationship of routing and mapping in the communication, and the process is easy to manage.

Method for implementing integrated network home domain information diffusion

A route selecting method of multipath parallel transmission and delivery is used for appending sent data size, lost data size and path packet loss ratio to each opposite terminal address. The specific calculation steps are as follows: 1) initializing the path; 2) the sent data size of the path is increased every time the data is sent by using the path; 3) the lost data size of the path is increased every time that the lost data is discovered; 4) the path packet loss ratio is updated every time after the sent data size or lost data size of parameter is updated; 5) for each data block, calculating the value of statistical indicant tag of each path and selecting the path with minimum tag value as the data sending path; then sending the data and increasing the sending counter of the path for calculating the path packet loss ratio. The method can provisionally avoid the abnormal path when the path is abnormal, thus reducing retransmission frequency and improving the whole efficiency of transmission, and can gradually recover normal route selecting after removing the abnormal path.

Route selecting method of multipath parallel transmission and delivery

Method and system for guaranteeing service quality of integrated identification network

The invention provides a resource-oriented hierarchical name resolution system, which effectively overcomes the shortcoming of single resolution way for resolving a uniform resource locator (URL) to an Internet protocol (IP) address by the conventional domain name resolution system and perfectly provides support for service combination and service or data transfer In addition, a local entry updating mechanism of a service identification mapping system (SIDMS) solves the potential problems of mapping entry expansion of a name system; and a multilayer cache mechanism ensures the low resolutiondelay of the name system The local mapping entry updating mechanism and the multilayer cache mechanism fully present the high expansibility of the SIDMS The two big problems of uninterrupted services in dynamic and mobile network environments and the fusion of network middleware of the current Internet can be well solved by the SIDMS

Resource-oriented hierarchical name resolution system

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