27-08-2012, 01:04 PM
ON MODELING,ANALYSIS AND OPTIMIZATION OF PACKET AGGREGATION SYSTEMS
[attachment=32824]
Abstract
In packet communication systems, a header is attached to the transmitted packet at each layer.
The overhead due to the transmission of the individual header can have a significant impact on the performance of the communication system especially when the system operates in heavy load.
The impact of the variability of the packet length distribution on different system performance measures is rather insignificant when the system load is low or moderate.
Introduction
A packet transmission via Open System Interconnection (OSI) assumes that a header is attached to the transmitted packet at each layer.
In order to reduce the overhead and increase data throughput, a number of packets can be aggregated into a frame at the time of encapsulation when the bit error rate is not very high.
Packet aggregation methods have been proposed for about a decade now More recently, there has been renewed interest of their applications in wireless networks where fairness and inefficiency issues due to a small payload in 802.11-based wireless systems are examined.
Existing system
Existing Packet queuing and Aggregation model with batch service which describes a packet aggregation process for Poisson arrivals and Phase-type service time distributions of the transmitted packets..
Didn’t show the accuracy of the bound on the average total packet delay and queuing status...
Proposed system
Our model consists of a queuing system with batch service, where a complete performance analysis is provided.
We assume a general packet and header length distribution, where the Supplementary Variable Technique is used for the analysis. Therefore, constant header size is readily analyzed as a special case, which is the most common in packet communication systems.
we provide the analysis of the end-to-end delay of a packet and the distribution of the frame size. System performance measures.
Packet transmission
Impact on the performance of a packet communication system especially when the system operates in heavy load.
To reduce the overhead and increase data throughput, a number of packets can be aggregated into a frame at the time of encapsulation when the bit error rate is not very high.
The cost of frame retransmission due to transmission error may offset any performance gain from packet aggregation, since a frame consisting of a number of packets needs to be retransmitted instead of a single packet.
Packet queuing model and analysis module
Arriving packets are stored in an infinite buffer until they are transmitted to the destination peer.
The transmission over the data link layer is done frame by frame. Data packets received from the network layer can be aggregated in a single frame.
Each frame consists of a header and a number of data packets.
Conclusion
system performance can be significantly improved if packet aggregation takes place.
we found the minimum system utilization where aggregation improves the system performance.
[attachment=32824]
Abstract
In packet communication systems, a header is attached to the transmitted packet at each layer.
The overhead due to the transmission of the individual header can have a significant impact on the performance of the communication system especially when the system operates in heavy load.
The impact of the variability of the packet length distribution on different system performance measures is rather insignificant when the system load is low or moderate.
Introduction
A packet transmission via Open System Interconnection (OSI) assumes that a header is attached to the transmitted packet at each layer.
In order to reduce the overhead and increase data throughput, a number of packets can be aggregated into a frame at the time of encapsulation when the bit error rate is not very high.
Packet aggregation methods have been proposed for about a decade now More recently, there has been renewed interest of their applications in wireless networks where fairness and inefficiency issues due to a small payload in 802.11-based wireless systems are examined.
Existing system
Existing Packet queuing and Aggregation model with batch service which describes a packet aggregation process for Poisson arrivals and Phase-type service time distributions of the transmitted packets..
Didn’t show the accuracy of the bound on the average total packet delay and queuing status...
Proposed system
Our model consists of a queuing system with batch service, where a complete performance analysis is provided.
We assume a general packet and header length distribution, where the Supplementary Variable Technique is used for the analysis. Therefore, constant header size is readily analyzed as a special case, which is the most common in packet communication systems.
we provide the analysis of the end-to-end delay of a packet and the distribution of the frame size. System performance measures.
Packet transmission
Impact on the performance of a packet communication system especially when the system operates in heavy load.
To reduce the overhead and increase data throughput, a number of packets can be aggregated into a frame at the time of encapsulation when the bit error rate is not very high.
The cost of frame retransmission due to transmission error may offset any performance gain from packet aggregation, since a frame consisting of a number of packets needs to be retransmitted instead of a single packet.
Packet queuing model and analysis module
Arriving packets are stored in an infinite buffer until they are transmitted to the destination peer.
The transmission over the data link layer is done frame by frame. Data packets received from the network layer can be aggregated in a single frame.
Each frame consists of a header and a number of data packets.
Conclusion
system performance can be significantly improved if packet aggregation takes place.
we found the minimum system utilization where aggregation improves the system performance.