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Method and device for processing fragment data packets

A processing method and technology for slicing data, applied in data exchange networks, digital transmission systems, electrical components, etc., and can solve problems such as matching failure and data going

Active Publication Date: 2017-05-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the fragmented data packets are not reassembled on the sgi interface, the match will fail when the service flow template is matched, so that the data that goes through the dedicated bearer goes to the default bearer

Method used

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  • Method and device for processing fragment data packets
  • Method and device for processing fragment data packets
  • Method and device for processing fragment data packets

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Embodiment Construction

[0103] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than 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 belong to the protection scope of the present invention.

[0104] Due to the limit of the link layer on the length of data transmission, if the length of the IP message exceeds the limit of the link layer, the IP message needs to be fragmented, so that each fragmented data packet of the fragmented IP message The length is within this limit, and each fragmented data packet contains its own IP packet header, and the 16-bit identification number in the IP packet header uniquely records the identificat...

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Abstract

The invention discloses a method and a device for processing fragment data packets. The method comprises steps: fragment data packets of an IP message is received, a corresponding chain table is acquired according to the address information of the IP message, one or more nodes exist in the chain table, each node is corresponding to one or more sequentially-cascaded fragment data packets, the first offset of each node is the fragment offset of the first fragment data packet corresponding to the node, the second offset of each node is the sum of the fragment offset of the last fragment data packet corresponding to the node and the fragment length of the last fragment data packet, a new node corresponding to the fragment data packet is built, the first offset and the second offset of the new node are set, the target position of the new node in the chain table is determined according to the first offset and / or the second offset of the new node and the first offset and / or the second offset of the node in the chain table, and the chain table is thus updated. The method and the device of the invention improve the recombination efficiency.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for processing fragmented data packets. Background technique [0002] As services such as data downloads in the LTE network become more frequent, the data traffic transmitted in the network and the services of data packet switching increase rapidly. Since each packet switching network technology has an upper limit on the amount of data transmitted on a physical frame, that is, the maximum transmission unit MTU (Maximum Transmission Unit, maximum transmission unit value) of the physical network, different link types can support The MTU is different, and is specified in relevant RFC documents. For example, the MTU value of a common Ethernet link is 1500. Before a network with a larger MTU value forwards an IP packet to a network with a smaller MTU value, it needs to divide the large IP packet into small fragmented data packets so that it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/953H04L12/893H04L47/43H04L47/36H04L47/40
CPCH04L49/9057
Inventor 周水生温红根张郑锟
Owner DATANG MOBILE COMM EQUIP CO LTD
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