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On the Excess Bandwidth Allocation in ISP Traffic
Control for Shared Access Networks
Abstract:
Developing efficient scheduling algorithms for advance bandwidth
reservation has become a critical task to improve the utilization of network
resources and meet the transport requirements of application users. Developing
efficient scheduling algorithms for advance bandwidth reservation has become a
critical task to improve the utilization of network resources and meet the transport
requirements of application users We propose a scheme, named Bandwidth
Recycling, to recycle the unused bandwidth without changing the existing
bandwidth reservation. The idea of our scheme is to allow other SSs to utilize the
unused bandwidth when it is available Thus, not only the same QoS guaranteed
services can be provided but also the system throughput can be improved. We
propose an optimal algorithm with exponential time complexity for small-scale
networks, and develop heuristics with polynomial time complexity for large-scale
ones. The performance superiority of these heuristics is verified by extensive
experimental results in a large set of simulated networks in comparison with
optimal and greedy strategies.
Existing system:
Important part in bringing out the network services lies in existing technology.
Routing and switching are the main methods of delivering the data through the

2. network. Both have their disadvantages and benefits and there are many variations
of them applying in different ways to different situations. Another big issue is the
resource handling with QoS. In IP world, there are a few proposals to resource
handling problems and besides that there are a few technologies providing different
approaches to QoS problems. These include for instance ATM and Gigabit
Ethernet. Traffic shaping cannot allocate excess bandwidth to active subscribers in
the long term. This is because the traffic shaper based on token bucket cannot take
into account the status of other subscribers.
Disadvantages of Existing System:
 Packet loss.
 Low- performance of data communication.
 We need the big amount of buffer space.
 Need very high-speed networks are capable of carrying data.
Proposed System:
We design the excess bandwidth allocation in shared access networks and
propose ISP traffic control schemes based on core-stateless fair queueing (CSFQ)
and token bucket meters. It is possible that the amount of reserved bandwidth is
more than the demand. Therefore, the reserved bandwidth cannot be fully utilized.
Although the reserved bandwidth can be adjusted via BRs, however, the updated
reserved bandwidth is applied as early as to the next coming frame and there is no
way to utilize the unused bandwidth in the current frame. The modification of
token bucket algorithm and/or the change of its negotiated parameters during the
operation may raise the issue of traffic conformance which is currently based on
the original token bucket algorithm and compromise the quality of service (QoS)
of conformant traffic as a result.
Advantages:

3.  Reduce the cost and pocket loss.
 We can use the unused bandwidth for a recycling.
 We minimize the data transfer end time.
Hardware Requirement:
System : Pentium IV 2.4 GHz.
Hard Disk : 40 GB.
Floppy Drive : 1.44 Mb.
Monitor : 15 VGA Color.
Ram : 256 Mb.
Software Requirement:
Operating system : Windows XP Professional.
Coding Language : Java.
Tool Used : NetBeans 7.0.1