Method for reducing data IP fragmentation quantity in PS network

An IP fragmentation and packet network technology, applied in the field of communications, can solve problems such as reducing the processing performance of network equipment, and achieve the effects of reducing IP packet fragmentation, improving processing capacity, and reducing delay.

Inactive Publication Date: 2006-11-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, packet domain network devices will generate and receive a large number of...

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  • Method for reducing data IP fragmentation quantity in PS network
  • Method for reducing data IP fragmentation quantity in PS network

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no. 1 example

[0050] The first embodiment provided by the present invention, such as figure 2 shown, including:

[0051] Step 101, the packet network device in the communication system decapsulates the data packet transmitted between the terminal and the server that has been encapsulated by the tunnel protocol to obtain the corresponding tunnel protocol payload, that is, the original IP packet transmitted between the terminal and the server , recorded as IP_origin.

[0052] Step 102, the packet network device judges whether the length of the IP_origin conforms to the typical length of the TCP connection message, and if so, executes step 103; otherwise, executes step 108, that is, continues subsequent processing. There are two cases for follow-up processing. The first is to encapsulate and send again using the tunnel protocol, such as SGSN; the second is to directly send the IP_origin, such as GGSN.

[0053] Since the flow of data packets passing through the packet network device is very ...

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Abstract

The invention relates to a method for reducing the number of data IP fragments in packet domain network, and its kernel: packet network device regulates MSS parameter value of maximum transfer unit carried in TCP connection information between terminal and service according to the set MSS parameter threshold and sends out the regulated TCP connection information; the terminal or server learns a longest message segment length supported by the opposite terminal through MSS parameter carried in the TCP connection information, and compares this longest message segment length with its own longest message segment length, and selects the smaller value to make segment handling on TCP transfer data. And the invention can reduce IP packet fragments between packet network devices by regulating MSS parameter value, reduce data packet handling delay and improve packet device handling ability.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for reducing the number of data IP fragments in a mobile communication packet domain network. Background technique [0002] The TCP / IP protocol is a communication protocol widely used in both wide area networks and local area networks. The maximum length of IP packets that can be transmitted on different link layers is limited. This maximum length is called MTU (Maximum Transmission Unit). [0003] During the routing process of an IP packet, if its length is greater than the MTU of the sending interface of the router, the IP packet needs to be divided into multiple IP packets whose length is not greater than the MTU and sent. These short IP packets carry the same 16-bit The identifier is used to indicate that these short IP packets belong to fragments of the same long IP packet. This process is called fragmentation (Fragment). The fragmented IP packet is reassembled into a lon...

Claims

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Application Information

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IPC IPC(8): H04L47/36
Inventor 银宇
Owner HUAWEI TECH CO LTD
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