Method for Segmented Data Transmission in Packet Switching Network
A packet switching network and data segmentation technology, applied in data switching networks, digital transmission systems, transmission systems, etc., can solve problems such as reducing the effective transmission bandwidth of the network and reducing the efficiency of network transmission resources, so as to improve the use efficiency and fully The effect of using
Inactive Publication Date: 2011-12-07
ATHEROS SHANGHAI
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Problems solved by technology
Packet discarding will reduce the effective transmission bandwidth of the network, which means that the utilization efficiency of network transmission resources will be reduced
Method used
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[0041] see figure 2 , the method for the segmented data transmission of the packet switching network of the present invention is as follows:
[0042] In the first step, the sender judges whether the package to be sent can be completely sent within the currently available time resources;
[0043] If possible, the sender sends the packet completely within the currently available time resources, and then repeats the first step to determine the next packet to be sent;
[0044] If not, the sender encapsulates as much data in the packet as a start data segment according to the currently available time resource, and sends the start data segment within the currently available time resource;
[0045] In the second step, the sender judges whether the remaining data of the packet can be completely sent within the next available time resource;
[0046] If possible, the sender encapsulates the remaining data of the packet as an end data segment, and sends the end data segment within the...
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The invention discloses a method for data segment transmission of a packet switching network. The method comprises the following steps: the sending terminal judges whether the dispatched packet can be completely sent in the current available time resource; if the dispatched packet can be completely sent in the current available time resource, the packet is sent; if not, the packet is segmented; and recombination is carried out at the receiving terminal on the basis of the received segments to recover the packet. The invention adopts an improvement that the condition of sending terminal judgment is changed into the condition that whether the dispatched packet can be completely sent in the current available time resource and meets the requirement on maximum package length of the transmission network. The invention also provides two network segmenting formats and methods through Ethernet frame transmission data, which are respectively a segmenting format based on UNI / NNI interface and a segmenting format based on terminal-to-terminal. Data segments can be flexibly packaged according to the time resource and sent in time. Therefore, the time resource can be more fully utilized, and the utilization efficiency of the transmission network at the sending terminal can be improved.
Description
technical field [0001] The invention relates to a method of data transmission in a packet switching network. Background technique [0002] In a packet-switched network, the packet is the basic unit of data transmission. The sender determines the transmission order of the packets based on its own scheduling algorithm. When the sender schedules and starts to transmit a packet, it needs to send it continuously, and cannot stop the transmission before sending it, or start sending another packet in the middle of sending the packet. The length of the packet can be fixed or variable. The maximum packet length allowed by different parts of a packet switching network can be different. [0003] In actual situations, the packet switching network will have the following two situations at the same time, or only one of them: [0004] First, the packet-switching network only allows the sending end to transmit packets in a limited time slice (for example, in an EOC (Ethernet Over Cable,...
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IPC IPC(8): H04L12/56H04L1/00
Inventor 李珂张欣明
Owner ATHEROS SHANGHAI