Multiplex communications – Wide area network – Packet switching
Patent
1992-08-14
1995-11-21
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
370 54, 370 581, 370 582, 370 941, 370 951, 370 60, 3642391, 3642592, 3642615, 364DIG1, G06F 702, G06F 704, G06F 710
Patent
active
054695430
ABSTRACT:
In a policing arrangement for an ATM network, every incoming cell is stored in a cell buffer and a virtual path identifier (VPI) contained in the cell is extracted and translated to a corresponding one of a set of threshold values. Policing circuits of a matrix array are connected column by column for transferring a VPI in accordance with a read/write control circuit. Each policing circuit of the first column is uniquely responsive to a VPI of a particular value for storing the extracted VPI into a bridge memory, and this column has a greater number of policing circuits than any of the other columns of the array. In each column of the array, at least one of the policing circuits includes a cell counter for incrementing a cell count value in response to the VPI of every incoming cell and decrementing the cell count in response to a VPI read out of the bridge memory of the policing circuit. The cell count value is compared with the threshold value and a cell is discarded from the cell buffer when the cell count value exceeds the threshold value.
REFERENCES:
patent: 4799152 (1989-01-01), Chuang et al.
patent: 5179556 (1993-01-01), Turner
patent: 5253247 (1993-10-01), Hirose et al.
patent: 5258979 (1993-11-01), Oomuro et al.
patent: 5271005 (1993-12-01), Takase et al.
patent: 5315586 (1994-05-01), Charvillat
patent: 5323389 (1994-06-01), Bitz et al.
Youichi Sato and Ken-Ichi Sato, Virtual Path and Link Capacity Design for ATM, Jan. 1991, pp. 104-111.
Kowalk et al., The "Policing Function" to Control User Access in ATM Networks--Definition and Implementation--, Jun. 1988, pp. 240-245.
Kurano Takatoshi
Nishihara Motoo
Sato Youichi
Yamanaka Naoaki
Lee Thomas C.
Luu Le Hien
NEC Corporation
LandOfFree
Policing circuits arranged in matrix array for selectively trans does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Policing circuits arranged in matrix array for selectively trans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Policing circuits arranged in matrix array for selectively trans will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1144761