Call setup control apparatus in ATM switch
US6324166A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5651
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A call setup control apparatus has a first calculation unit for calculating an objective value of cell loss ratio P.sub.B (u) of a buffer B.sub.u in priority class u which is equal to or lower than a priority class k (u=k to K), based upon parameters of an average cell rate R(k,j), an objective value of cell loss ratio Q(k,j), and the number of calls N(k,j) for calls of each type j (J=1 to J.sub.k) in each class k (=1 to K), with considering a cell rate of calls in priority class which is higher than the class k (class 1 to k-1), when a fresh call is arrived, a unit for obtaining a bandwidth .alpha.(k,u,j) required for calls of type j in class k in the buffer B.sub.u to make a cell loss ratio in the buffer B.sub.u to be equal to or less than the objective value P.sub.B (u), a second calculation unit for calculating a required bandwidth C(u) for the buffer B.sub.u, based upon the obtained bandwidth .alpha.(k,u,j), and a unit for judging whether the fresh call is acceptable or not by comparing the calculated bandwidth C(u) with a link capacity C.sub.p.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.