Skip to main content

Full text of "USPTO Patents Application 09750903"

See other formats


920476-904876 


In the Claims 

Claims are amended as follows: 
1 to 20 (cancelled) 

21 . (new) A method of controlling the admission of a traffic flow to a 
communications network, the method comprising the steps of: 

sampling an aggregated traffic flow on a network resource to which the traffic 
flow is to be admitted to obtain a mean bandwidth measurement and a bandwidth 
variance measurement of said aggregated traffic flow; 

determining from said mean bandwidth and variance measurements a price 
for bandwidth and a separate price for variance; 

sampling the traffic flow to be admitted to the network resource to measure its 
mean bandwidth and variance; and 

applying to said traffic flow the separate prices for bandwidth and variance as 
a means of controlling admission of the traffic flow to the network resource. 

22. (new) The method of claim 21 , wherein the price for bandwidth is determined 
as a price for unit bandwidth and the price for variance is determined as a price for 
unit variance. 

23. (new) The method of claim 22, wherein a total price for admission of the 
traffic flow to the network resource is provided to an admission controller of said 
traffic flow, said total price comprising the sum of the following products: i) the 
measured mean bandwidth of the traffic flow times the price per unit bandwidth for 
using the network resource; and ii) the variance of the traffic flow times the price per 
unit variance for using the network resource. 


2 


920476-904876 


24. (new) The method of claim 21 , wherein an admission controller associated 
with the traffic flow regulates at least one of the mean bandwidth and variance of 
said traffic flow. 

25. (new) The method of claim 24, wherein said admission controller comprises 
an ingress controller in an edge node of the communications network. 

26. (new) The method of claim 21 , wherein respective maximum control limits are 
defined for both the mean bandwidth and bandwidth variance components of the 
aggregated traffic flow on the network resource, and wherein at least one of said 
price for bandwidth and price for variance is increased as any of the mean bandwidth 
and variance measurements of said aggregated traffic flow approaches its respective 
limit. 

27. (new) The method of claim 26, wherein the determination of the bandwidth 
price is a function of the difference between the measured mean bandwidth of the 
aggregated traffic flow and the mean bandwidth control limit, and of the first and 
second derivatives against time of said function. 

28. (new) The method of claim 26, wherein the determination of the variance 
price is a function of the difference between the control limit and the sum of the 
measured variance of the aggregated traffic flow and a standard deviation 
corresponding to said variance, and of the first and second derivatives against time 
of said standard deviation. 

29. (new) A network manager for a communications network, comprising: 

a first traffic flow sampler for sampling aggregated traffic flow on a network 
resource to which a traffic flow is to be admitted to obtain a mean bandwidth 
measurement and a bandwidth variance measurement of said aggregated traffic 
flow; 


3 


920476-904876 


price computation means for determining from said mean bandwidth and 
variance measurements a price for bandwidth and a separate price for variance; 

a second traffic flow sampler for sampling the traffic flow to be admitted to the 
network resource to measure its mean bandwidth and variance; and 

means for applying to said traffic flow the separate prices for bandwidth and 
variance as a means of controlling admission of the traffic flow to the network 
resource. 

30. (new) The network manager of claim 29, wherein the price computation 
means determines the price for bandwidth as a price for unit bandwidth and the 
price for variance as a price for unit variance. 

31 . (new) The network manager of claim 29, wherein the price computation 
means provides a total price for admission of the traffic flow to the network resource 
to an admission controller of said traffic flow, said total price comprising the sum of 
the following products: i) the measured mean bandwidth of the traffic flow times the 
price per unit bandwidth for using the network resource; and ii) the variance of the 
traffic flow times the price per unit variance for using the network resource. 

32. (new) The network manager of claim 29, wherein the network manager 
defines respective maximum control limits for both the mean bandwidth and 
bandwidth variance components of the aggregated traffic flow on the network 
resource, and wherein said manages increases at least one of said price for 
bandwidth and price for variance as any of the mean bandwidth and variance 
measurements of said aggregated traffic flow approaches its respective limit. 

33. (new) The network manager of claim 32, wherein the price computation 
means determines the bandwidth price as a function of the difference between the 
measured mean bandwidth of the aggregated traffic flow and the mean bandwidth 
control limit, and of the first and second derivatives against time of said function. 


4 


920476-904876 


34. (new) The network manager of claim 32, wherein the price computation 
means determines the variance price as a function of the difference between the 
control limit and the sum of the measured variance of the aggregated traffic flow and 
a standard deviation corresponding to said variance, and of the first and second 
derivatives against time of said standard deviation. 

35. (new) An admission controller for admitting traffic flows to a network resource 
in a communications network, the controller comprising: 

a traffic flow sampler for sampling a traffic flow to be admitted to the network 
resource to measure its mean bandwidth and variance; 

means for receiving a price for bandwidth and a separate price for variance 
from a network manager; and 

means for applying to said traffic flow the separate prices for bandwidth and 
variance received from the network manager as a means of controlling admission of 
the traffic flow to the network resource. 

36. (new) A computer readable medium comprising program code for configuring 
a network manger of a communications network, said program code comprising: 

code for sampling aggregated traffic flow on a network resource to which the 
traffic flow is to be admitted to obtain a mean bandwidth measurement and a 
bandwidth variance measurement of said aggregated traffic flow; 

code for determining from said mean bandwidth and variance measurements 
a price for bandwidth and a separate price for variance; 

code for sampling the traffic flow to be admitted to the network resource to 
measure its mean bandwidth and variance; and 

code for applying to said traffic flow the separate prices for bandwidth and 
variance as a means of controlling admission of the traffic flow to the network 
resource. 


5