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Data transmission management method supporting multi-source and multi-path
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A technology of data transmission and management method, applied in the field of data transmission management supporting multi-source and multi-path, can solve the problems such as the inability to use the bandwidth well and the effect is not ideal, so as to improve the network utilization rate, stabilize the data flow and reduce the congestion. Effect
Active Publication Date: 2020-03-24
BEIJING JIAOTONG UNIV
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[0008] The shortcoming of the congestion management method in the second kind of multipath management in the prior art is: the actual situation is that the bandwidth, time delay and reliability of each path are not the same, and this method combines the bandwidth, time delay and reliability of each path The performance is recognized as the same, and the bandwidth cannot be used well, especially when the difference between the paths is large, the effect will be very unsatisfactory
For example, a router has two exits and two paths, one with a bandwidth of 100M and the other with a bandwidth of 2M. If ECMP is deployed, the total network bandwidth can only reach the utilization rate of 4M.
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Embodiment 1
[0070] When using the present invention to upload files, the terminal does not need to wait for the data to be transmitted through a long route network, but only needs to transmit the data to the nearest sub-source device, and the sub-source device completes this time-consuming task, thereby liberating the terminal as soon as possible. Figure 7 A schematic topology diagram of three paths is given for this embodiment.
[0071] First upgrade terminals and servers to support multi-source and multi-path transmission strategies.
[0072] Deploy a sub-source device on the terminal side and server side respectively, and provide corresponding paths for the sub-source device, Figure 7 Three isolated paths are given in , of course, there can also be paths with intersections.
[0073] When the terminal uploads files, because it is directly connected to the sub-source, the data will be transmitted to the sub-source at a direct line speed. The sub-source will cache the data and coordina...
Embodiment 2
[0075] When multiple terminals access the Internet at the same time, the sub-source can control the terminal congestion window, so as to distribute the bandwidth evenly, instead of making them compete to cause congestion. Figure 8 This embodiment provides a topology diagram of two terminals simultaneously transmitting data through sub-source devices.
[0076] The same terminal needs to support this strategy, and arrange this topology, and multiple terminals are connected to different interfaces;
[0077] When two terminals access the Internet at the same time, the terminals first establish a connection with the sub-source device. At this time, the sub-source finds that it has three 10Mb / s paths, and each terminal is allocated 15Mb / s.
[0078] The sub-source will establish a connection with the source device and request data. When the terminal window increases to 15Mb / s, it will stop increasing.
[0079] This bandwidth limitation is realized through the congestion window, whi...
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Abstract
The invention provides a data transmission management method supporting multi-source and multi-path. The method mainly includes: establishing a MS-MPTCP connection between a source device and a terminal, adding a sub-source device in the MS-MPTCP connection, and using the MS-MPTCP connection to communicate with the source or the source through multiple paths. The terminal performs data communication; the sub-source receives data from the source or the terminal, and the sub-source device assigns transmission to the data packet according to the size of the data packet and the transmission delay of each path paths, allocating transmission bandwidth to the terminal according to the receiving window of the terminal and the bandwidth of each path. The present invention can meet the requirements of multi-source and multi-path coordination for path congestion perception and path allocation and scheduling, can flexibly allocate paths to terminals, can obtain and control terminal congestion windows to reduce congestion, can improve network utilization, increase user bandwidth, Provides a steady flow of data.
Description
technical field [0001] The invention relates to the technical field of wireless network communication, in particular to a data transmission management method supporting multi-source and multi-path. Background technique [0002] Currently, smart terminals generally have multiple network interfaces, and current networks generally have multiple paths to reach the same destination, such as redundant multipaths inherent in data centers. However, these paths are not well utilized. MPTCP (Multipath TCP, multipath TCP) protocol is a transport layer protocol that uses multiple paths for concurrent transmission, which can improve end-to-end throughput and increase network utilization. And because MPTCP only expands the option field of the TCP message, it can be widely used through traditional network equipment without changing the network intermediate equipment. [0003] Although MPTCP can transmit data through multiple paths, reduce network delay, and improve network utilization, in...
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