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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.4 P.477~482


Redundancy Elimination in GPRS network

Author(s):  Qiu Qin-long, Zhang Dong-mei, Ma Jian, Zhang Da-jiang

Affiliation(s):  National Key Lab of Switching Technology and Telecommunication Network, Beijing University of Posts & Telecommunications, Beijing 100876, China; more

Corresponding email(s):   qiuqinlong@sohu.com, dongmei.zhang@nokia.com, jian.j.ma@nokia.com, dajiang.zhang@nokia.com

Key Words:  GPRS, TCP, Redundancy Elimination, Network Simulation 2 (NS 2)

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Qiu Qin-long, Zhang Dong-mei, Ma Jian, Zhang Da-jiang. Redundancy Elimination in GPRS network[J]. Journal of Zhejiang University Science A, 2006, 7(4): 477~482.

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The mechanisms of TCP’s retransmission and reset will result in redundant packets. These redundant packets are often sent unnecessarily to the user over a slow last-hop link delaying useful traffic. This is a problem for wide-area wireless links, such as General Packet Radio Service (GPRS), because unnecessary transmissions waste already limited radio bandwidth, battery power at the mobile terminal and incurs monetary cost due to charging by data volume. The paper first describes a GPRS model, then discusses how to eliminate the redundant packets in GPRS network and presents the simulation results in network Simulation 2 (NS 2). The more traffic is, the more the network can benefit. In heavy traffic, it can even get more than 30% improvement in throughput. Average delay and loss percent are also lowered.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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