Method and apparatus for calculating packet arrival time interval
US8717898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2009 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Jan 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/005
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for calculating packet arrival time interval are provided by the present invention. In the above-mentioned method, when the current packet arrives, system current time T2 is read from a timer, and the arrival time T1, recorded in an external RAM, of previous packet of the flow to which the current packet belongs is read (301), wherein the timer implements a cycle timing with a period of preset time period Tmax, the preset time period Tmax is larger than or equal to the time for filling the maximum depth of the token bucket of the flow at the minimum token injection rate; a current flag bit, recorded in an internal RAM, of the flow to which the current packet belongs is read (303), wherein the current flag bit is used for indicating the number of cycles of the timer between the system current time T2 and the arrival time T1 of previous packet; and the arrival time interval of the present packet is calculated according to the system current time T2, the arrival time T1 of previous packet and the current flag bit (305). Application of the present invention can reduce the consumption of the internal RAM and improve the operability for realizing by the hardware…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.