Satellite communication segmental congestion control method based on packet loss ratio
A technology of satellite communication and congestion control, which is applied in the field of satellite communication, can solve the problems of difficult implementation of satellite communication links and low link utilization rate, and achieve the effect of improving transmission efficiency and reducing complexity
Active Publication Date: 2015-08-05
HANGZHOU DIANZI UNIV
View PDF3 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the above three methods have made major changes to the traditional TCP protocol, they all require more accurate measurement of RTT, which is very difficult to achieve in satellite communication links
In addition, the above scheme is not optimized for the high burst error rate of the satellite link, and the utilization rate of the link is low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] The preferred embodiments of the present invention will be described in detail below.
[0045] In this embodiment, a commonly used satellite communication network is used for illustration. The satellite network is as figure 1 As shown, it is composed of three parts: communication terminal, ground station and satellite terminal. Among them, terminal A is the sending end, terminal B is the destination end, the ground station is composed of the gateway station and the ground network, and the satellite end forms a forwarding cloud network. In this embodiment, only the congestion control problem of data transmission after the TCP connection is considered, and problems such as TCP connection, terrestrial network forwarding and satellite forwarding are not involved.
[0046] 1. Start-up phase (direct start algorithm based on data block sending)
[0047] 101. Generate and send an initial data block.
[0048] Use the maximum window value M in the cache of the sending end (termi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a satellite communication segmental congestion control method based on a packet loss ratio, which comprises the following steps: a step 101, generating an initial data block by a transmitting end and transmitting to a receiving end; a step 102, generating a confirming data block by the receiving end and transmitting back to the transmitting end; a step 103, confirming data block returning by the transmitting end and generating a new transmitting data block; a step 201, when the packet loss ratio satisfies a relationship alpha<Xi<=epsilon, performing common congestion processing by the transmitting end, wherein alpha is the packet loss ratio in normal link state communication of satellite communication, Xi is the packet loss ratio in i-th data transmission, and epsilon is the packet loss ratio in a relatively weak link state; and a step 202, when the packet loss ratio Xi>epsilon, performing severe congestion processing by the transmitting end. The satellite communication segmental congestion control method has functions of keeping a largest transmitting window as possible, improving transmission efficiency and reducing algorithm complexity.
Description
technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a segmented congestion control method for satellite communication based on packet loss rate. Background technique [0002] The commonly used satellite communication model is composed of communication terminal, ground station and ground terminal link, satellite and satellite link, such as figure 1 shown. Among them, the satellite link between the ground station and the satellite occupies a dominant position in the entire communication link, and the ground terminal link is relatively short and negligible. Due to the influence of external conditions such as weather, satellite links are prone to sudden errors. [0003] Based on the above-mentioned characteristics of the satellite link, the efficiency of data transmission when the traditional TCP protocol is applied to satellite communication is very low. It not only reduces the transmission efficiency, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04B7/185H04W28/02
CPCH04B7/1851H04W28/0289
Inventor 严军荣卢玉龙章坚武
Owner HANGZHOU DIANZI UNIV