Patent ID: 6922392

Claim:
A policing control method for restricting passage of packets transmitted on a network in a different traffic volume, the policing control method comprising: an arrival time detection step of detecting an arrival time of a packet, when the packet arrives; a setting step of presetting an estimated packet arrival time and a packet arrival permissible time; a calculation step of calculating a time difference between the detected packet arrival time and the preset estimated packet arrival time; a first judgment step of judging a difference in magnitude between the calculated time difference and an additional value by comparing the time difference with the additional value obtained by adding a standard interarrival time of packets to the preset packet arrival permissible time; a second judgment step of judging a difference in magnitude between the time difference and the packet arrival permissible time by comparing the time difference and the packet arrival permissible time, when it is judged at the first judgment step that the time difference is not larger than the additional value; a discarding step of discarding the packet, when it is judged at the second judgment step that the time difference is larger than the packet arrival permissible time; and a permitting step of permitting passage of the packet, when it is judged at the first judgment step that the time difference is larger than the additional value, or it is judged at the second judgment step that the time difference is not larger than the packet arrival permissible time.