Packet analysis device and packet analyzing method
US-2015023189-A1 · Jan 22, 2015 · US
Delay time measuring apparatus, computer readable record medium on which delay time measuring program is recorded, and delay time measuring method
US9344347B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9344347-B2 |
| Application number | US-41013809-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 24, 2009 |
| Priority date | Jun 17, 2008 |
| Publication date | May 17, 2016 |
| Grant date | May 17, 2016 |
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Abstract
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In a delay time measuring apparatus a sequence number, data length, and receiving time of a data packet transmitted from a source unit to a destination unit are stored in a storage section. In addition, an ACK number and receiving time of an ACK packet returned from the destination unit to the source unit are stored in the storage section. After that, a calculation section obtains an ACK packet an ACK number of which is equal to a value obtained by adding data length of a second data packet of two successive data packets transmitted without waiting for the ACK packet to a sequence number of the second data packet of the two successive data packets from the storage section. Then the calculation section calculates round trip time from receiving time of the second data packet of the two successive data packets and receiving time of the ACK packet obtained.
First claim
Opening claim text (preview).
What is claimed is: 1. A delay time measuring apparatus for measuring a delay time from transmission of data to reception of a response to the transmission, the apparatus comprising: a storage control section, coupled to a storage device, which receives a first data packet, as well as a second data packet subsequent to the first data packet, transmitted from a source unit to a destination unit and stores first and second sequence numbers and first and second data lengths of the re…
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- H04L43/0864Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9344347B2 cover?
- In a delay time measuring apparatus a sequence number, data length, and receiving time of a data packet transmitted from a source unit to a destination unit are stored in a storage section. In addition, an ACK number and receiving time of an ACK packet returned from the destination unit to the source unit are stored in the storage section. After that, a calculation section obtains an ACK packet…
- Who is the assignee on this patent?
- Matsuda Yuichi, Nomura Yuji, Fujitsu Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04L43/0864. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 17 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).