Control method, device and computer system for data transmission
A control method and a technology of a control device, which are applied in the field of communication, can solve the problems of unfavorable data transmission and effective utilization of bandwidth, network transmission speed reduction, and large control lag.
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Embodiment 1
[0050] This embodiment provides a method for controlling data transmission, and the method is applicable to the data transmission control of each network transmission device in the network. see figure 2 As shown, the data transmission control method in this embodiment mainly includes the following steps:
[0051] Step 201: Detect the current congestion parameters of each connection.
[0052] In this embodiment, the network transmission device or the control device connected to the network transmission device can detect in real time the packet loss situation of each current connection of the network transmission device and parameters reflecting the congestion situation of the connection such as time delay to determine the current status of each connection. Congestion parameters.
[0053] Step 202: Determine the size of the sending window of each connection.
[0054] In data sending, the network sending device limits the actual amount of data sent within a predetermined cont...
Embodiment 2
[0070] see image 3 As shown, the difference between the data transmission control method provided in this embodiment and Embodiment 1 includes that the data transmission control method in this embodiment includes the following steps:
[0071] Step 301: Detect the current congestion parameters of each connection.
[0072] It is the same as step 201 in Embodiment 1.
[0073] Step 302: Determine the size of the sending window of each connection.
[0074] It is the same as step 202 in Embodiment 1.
[0075] Step 303: Compare the current congestion parameter of each connection with the upper limit of the congestion parameter of this connection.
[0076] It is the same as step 203 in Embodiment 1.
[0077] Step 304: If the current congestion parameter of the current connection is smaller than the upper limit of the congestion parameter of the current connection, execute step 307; otherwise, execute step 305.
[0078] If the current congestion parameter of one or several connec...
Embodiment 3
[0090] see Figure 4 As shown, the data transmission control method provided by this embodiment is different from Embodiments 1 and 2 in that, in this embodiment, the size of the sending window of each connection can be determined according to the following technical solution. The method for determining the size of the sending window mainly includes the following processes:
[0091] Step 401: Detect the total number of current connections of the network sending device.
[0092] In this embodiment, the total number of current connections of the network sending device (marked as N) is regularly detected, so that in the next control cycle (marked as T), the sending window of each connection is determined according to the total number of current connections determined by the current detection the size of.
[0093] Step 402: Determine the egress bandwidth target value of the sending device in the network.
[0094]In this step, the egress bandwidth target value B can also be fixe...
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