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

Abstract

The invention relates to a multi-path transmission control terminal and method supporting multi-service data transmission requirements, belonging to the technical field of network communication. The terminal is set at the end point of data transmission, including multi-path session management module, path management module, stream division module, path selection module, sub-stream sending control module, sub-stream receiving control module, rectification and recombination module, path transmission quality reporting module and path evaluation module. When receiving the data flow of the upper application, the data flow is divided into flow blocks, a path is selected for each flow block, the flow blocks scheduled to the same path form a sub-flow, the flow block is further divided into transmission units, and encapsulated into multiple After receiving the multi-path transmission data packet, the data packet is sent to the opposite end, and the path selection strategy is dynamically adjusted according to the path transmission quality fed back by the opposite end; when the multi-path transmission data packet is received, the sub-flow data is reorganized, and then reorganized into a data stream and then sent to the upper layer application. The invention can meet different transmission requirements of various service types, and improves multipath transmission efficiency.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to a multi-path transmission control terminal and method supporting multi-service data transmission requirements. Background technique [0002] If the business data meets the concurrent transmission conditions, compared with the single-path transmission mode, the multi-path transmission mode can not only reduce the dependence on the single-path transmission quality conditions, expand the end-to-end transmission capacity, but also through mechanisms such as path redundancy and dynamic load distribution, It can realize fault-tolerant communication and improve transmission reliability. For applications such as file sharing and high-definition audio and video communications, multi-path transmission technology can effectively improve data transmission efficiency and increase system scalability. [0003] In order to realize the multi-path transmission of busines...

AI Technical Summary

Problems solved by technology

Dividing traffic according to the granularity of data packets can quickly and accurately allocate the desired traffic to each path. However, when the concurrent paths have large delay differences, the packet-based data flow division strategy results in a large amount of data. out of order

Divide the traffic according to the flow granularity, and assign each flow to a specified path. Although packet disorder can be avoided, since the flows usually have large differences in size and rate, it is likely that mismatched traffic is assigned to the path. , or cannot quickly rebalance the traffic of each path in a dynamic environment, resulting in congestion of some links and reducing the efficiency of the network

In addition, most of the existing multipath transmission control mechanisms are used in the backbone network, such as OSPF (Open Shortest Path First) routers in the network that support ECMP (Equal-Cost Multi-Path, Equal-Cost Multi-Path Routing) Or MPLS (Multi-Protocol Label Switching, multi-protocol label switching) ingress routers, etc. These routers distribute the aggregated traffic composed of multiple independent flows, which cannot meet the multi-path transmission control requirements based on application layer relays

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