A single-ended available bandwidth measurement method, device and transmitter
A measurement method and technology at the sending end, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of strong intrusion, poor measurement accuracy, slow measurement speed, etc., and achieve high measurement accuracy, fast measurement speed, and intrusion. low degree of effect
Active Publication Date: 2018-11-09
TENCENT TECH (SHENZHEN) CO LTD
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Problems solved by technology
[0005] The inventors of the present application found in the process of continuous practice and exploration that the existing single-ended usable bandwidth measurement methods have disadvantages such as poor measurement accuracy, strong intrusion, slow measurement speed and narrow application range.
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[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0023] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and the...
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The present invention provides a single-ended available bandwidth measuring method, a device, and a transmitting end. The single-ended available bandwidth measuring method includes: setting the parameters for the transmitting end; sending a probe packet queue based on a TCP protocol to a destination node; receiving the TCP reply packets returned from the destination node and calculating the round trip delay of each probe packet; searching for a first drop rate packet when the roundtrip delay drops to a constant value; and if the first drop rate packet exists, then using the average transmission rate of the probe packets when the first drop rate packet is transmitted as an available bandwidth measurement value. According to the invention, based on the TCP protocol and the self-loaded drop rate packet queue, the measurement of the available bandwidth is realized. With the invention, it is possible to achieve high measuring precision, fast measuring speed, low invasion and good robustness.
Description
technical field [0001] The invention belongs to the field of network performance testing, and in particular relates to a single-end available bandwidth measurement method and device based on TCP protocol and self-load rate reduction package. Background technique [0002] The available bandwidth refers to the maximum data transmission rate that the network path can provide for other flows without affecting the transmission rate of the background flow when there is a background flow (traffic that already exists on the network path). The available bandwidth of an end-to-end path is an important parameter to dynamically describe the transmission capacity of a network path. It can effectively evaluate the actual carrying capacity and performance of a network path. It is of great significance for monitoring network performance, diagnosing network operating conditions, and optimizing network performance. . [0003] According to different operation modes, the available bandwidth me...
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IPC IPC(8): H04L12/26
CPCH04L43/0894H04L43/10H04L43/50
Inventor 张俊生
Owner TENCENT TECH (SHENZHEN) CO LTD