Self-adaption high-speed information transmission method based on measurement
A high-speed information and transmission method technology, applied in the field of adaptive high-speed information transmission based on measurement, can solve problems such as inaccurate network bandwidth, inability to achieve transmission effects, transmission speed, and transmission rate, and achieve full use of network bandwidth.
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Embodiment 1
[0039] The invention discloses a measurement-based self-adaptive high-speed information transmission method. Two roles participate in the transmission process: a sender and a receiver. The object sent is a specific information block, such as a specified memory storage unit or disk file in a computer. This solution uses the UDP protocol for transmission, thereby avoiding the TCP handshake process and the ACK confirmation process, and avoiding the interference of network delay. The specific method is as follows:
[0040] a. Using the UDP protocol, the sender divides the sending object into multiple fixed-size packets, and the packet size is L;
[0041] b. At the beginning of transmission, the sender sends two packets continuously. These two packets are called measurement packet pairs. After receiving these two packets, the receiver calculates the time interval ΔT between the arrival of these two packets, and calculates Find the current available network bandwidth PB=L / ΔT;
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Embodiment 2
[0045] As a preferred embodiment of the present invention, a further technical solution of the present invention is: each group described in step a has a unique integer group number, and the group number is continuously incremented; and there is also step e after step d: receiving The party memorizes all received packet numbers, records all possible lost packet numbers, and counts the number of received packets as CG, and the number of lost packets as CL, thus calculating the packet loss rate LR=CL / (CG +CL), if the receiver finds that the packet loss rate LR is increasing continuously for N seconds, then in the next calculation of the PB value, divide the PB value obtained in step b by 2, prompting the sender to increase the sending interval ΔT, to avoid causing further network congestion. The value of P is preferably 1.2, and the size of L is not greater than 1200 bytes. Said t is 1 second. Said N is 10 seconds.
Embodiment 3
[0047] According to the value of L, N can also be adjusted to 8 seconds to 12 seconds.
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