Upload
ra-je-sh
View
252
Download
0
Embed Size (px)
Citation preview
8/3/2019 AAA 1 F- Review
1/22
OPTIMAL ACCOUNTINGPOLICIES FOR AAA SYSTEMS IN
MOBILE TELECOMMUNICATIONS
NETWORKS
8/3/2019 AAA 1 F- Review
2/22
PRESENTED BY,
RAJESH.C
FROM,
SRR ENGINEERING COLLEGE
8/3/2019 AAA 1 F- Review
3/22
ABSTRACT:
Authentication, Authorization, and Accounting
(AAA) deployments are expected to grow
significantly in emerging mobile systems as
they offer a plethora of services and mobile
applications.
In current systems, network access servers
(NAS) periodically report the service usage of
mobile users located within their coverage
areas.
8/3/2019 AAA 1 F- Review
4/22
The periodic reports are used by the billing
systems to minimize the incurred capital losses
if the serving NAS fails.
While shorter reporting intervals are desired for
lower losses, they can potentially result in
undesirably high signaling load.
8/3/2019 AAA 1 F- Review
5/22
EXISTING SYSTEM:
For some mobile users, only a portion of the
session is observed by the serving NAS.
Depending on the users concentration in the
border areas of the cellular coverage area
under consideration, the service sessions
arrival rates and their effective service time
within the NAS area may also largely fluctuate.
8/3/2019 AAA 1 F- Review
6/22
Hence, even though operators can choose to
determine the reporting intervals empirically
and based on past observation, future services
can be better served by a formal
characterization of the accounting intervals
which can optimally relate signaling load to thepotential loss.
8/3/2019 AAA 1 F- Review
7/22
DISADVANTAGES:
Potential loss due to heavy load.
Due to the shorter reporting intervals, wouldresult in requirements to handle about 30
percent more signaling load.
There is a trade-off between the potential loss
and the signaling load.
8/3/2019 AAA 1 F- Review
8/22
PROPOSED SYSTEM:
we propose an adaptive optimization mechanism
in multiservice AAA systems which limits the
potential loss without excessively generatingunnecessary usage reports.
Toward this goal, the next generation wireless
mobile systems are adopting the Authentication,
Authorization, and Accounting (AAA) systems .
8/3/2019 AAA 1 F- Review
9/22
ADVANTAGES:
The first formal framework that quantifies the
trade-off between the potential loss and the
signaling load in multiservice mobile
networks.
The estimates of the potential loss and the
signaling load are updated based on the
estimated statistics, which are then used
along with configuration parameters by the
optimization policies.
8/3/2019 AAA 1 F- Review
10/22
Our scheme can be viewed as an AAA
module which receives the authentication,
accounting start, and accounting stop
requests and use them to update the
accounting interim intervals from all
services that will be used by currently
arriving and future service sessions.
8/3/2019 AAA 1 F- Review
11/22
SYSTEM REQUIREMENTS:
SOFTWARE REQUIREMENTS
y LANGUAGE : JDK 1.6
y FRONT-END : JAVA SWING
y BACK-END : SQL SERVER 2000.
HARDWARE REQUIREMENTS
y PROCESSOR : Pentium IV
y SPEED : 512 MB
y MEMORY : 128 MB DDR RAM
y HARD DISK : 40 GB
8/3/2019 AAA 1 F- Review
12/22
SYSTEM ARCHITECTURE:
8/3/2019 AAA 1 F- Review
13/22
DATAFLOW DIAGRAM:
8/3/2019 AAA 1 F- Review
14/22
MODULE DESCRIPTION:
Authentication, Authorization, and
Accounting (AAA)
The Load and Loss Estimation
The Optimization Policies
8/3/2019 AAA 1 F- Review
15/22
AUTHENTICATION, AUTHORIZATION, AND
ACCOUNTING (AAA)
As the current AAA standards leave the
determination of the reporting periods open
to the operators, the question arises of howto minimize the potential losses while
avoiding excessive server over provisioning,
especially as the number of mobile servicesis expected to grow and energy and data
center sizes are becoming a concern.
8/3/2019 AAA 1 F- Review
16/22
The estimation of the signaling load in the
absence of mobility and then show how to
incorporate mobility effects.
The potential loss is defined as the unreported
usage from impacted services when their
serving NAS fails.
THE LOAD AND LOSS ESTIMATION:
8/3/2019 AAA 1 F- Review
17/22
THE OPTIMIZATION POLICIES:
We propose two optimization policies, i.e., the
Constrained Loss Policy (CLP) and the
Adaptive Policy with Weight Control (APWC).
Constrained Loss Policy (CLP)
Adaptive Policy with Weight Control
(APWC)
8/3/2019 AAA 1 F- Review
18/22
CONSTRAINED LOSS POLICY (CLP)
The objective is to minimize the signaling load from
all NAS es subject to two classes of linear
constraints:
limiting the range of the interim intervals for all
services.
limiting the potential loss from each NAS to an
upper bound .
8/3/2019 AAA 1 F- Review
19/22
IT does not require the definition of loss bounds
on NAS es by attempting to optimally minimize
the losses using the available capacity andwithout excessively using up the systems
resources.
Adaptive Policy with Weight
Control (APWC)
8/3/2019 AAA 1 F- Review
20/22
CONCLUSION:
We proposed an adaptive optimization
mechanism for postpaid accounting in
multiservice AAA systems.
Our mechanism limits the potential loss without
excessively generating unnecessary usage
reports.
8/3/2019 AAA 1 F- Review
21/22
REFERENCE:
P. Calhoun et al., Diameter Base Protocol,
IETF RFC 3588, Sept 2003.
3GPP TS 32.299, Diameter Charging
Applications, 09, 2008.
3GPP TS 22.258, Service Requirements for the
All IP Network (AIPN), V8.0.0, Mar. 2006.
Motorolas UMTS Radio Network Controller
Solution, Datasheet, 2007.
J. Koomey, Estimating Total Power
Consumption by Servers in The U.S. and the
World, final report, LBNL, 2007.
8/3/2019 AAA 1 F- Review
22/22
ANY QUERIES????