Performance optimized and configurable state based heuristic for the classification of real-time transport protocol traffic
US9065744B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Mar 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/0852
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A probe receives a first packet over a network on a port. A sequence number and synchronization source identifier (SSRC) associated with the first packet are identified. The probe receives a subsequent packet and a sequence number and SSRC associated with the subsequent packet are determined. The probe determines whether the SSRC associated with first packet and the SSRC associated with the subsequent packet match. Additionally, the probe determines whether the sequence number associated with the subsequent packet is within an acceptable range of values related to the sequence number associated with the first packet. Additionally, the probe calculates the time interval between reception of the packets. The probe classifies traffic on the port as RTP or non-RTP traffic based on analysis of the SSRCs, sequence numbers and time intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.