Computing TCP Throughput in a UMTS Network

Author

Anand, Kunde ; Sharma, Vinod

Author_Institution

Indian Inst. of Sci., Bangalore

fYear

2008

fDate

March 31 2008-April 3 2008

Firstpage

2507

Lastpage

2512

Abstract

We compute the throughput obtained by a TCP connection in a UMTS environment. For downloading data at a mobile terminal, the packets of each TCP connection are stored in separate queues at the base station (node B). Also due to fragmentation of the TCP packets into Protocol Data Units (PDU) and link layer retransmissions of PDUs there can be significant delays at the queue of the node B. In such a scenario the existing models of TCP may not be sufficient. Thus, we provide a new approximate TCP model and also obtain new closed-form expressions of mean window size. Using these we obtain the throughput of a TCP connection which matches with simulations quite well.

Keywords

3G mobile communication; mobile radio; queueing theory; transport protocols; TCP; UMTS network; base station; link layer retransmission; mobile terminal; protocol data unit; queueing theory; 3G mobile communication; Automatic repeat request; Closed-form solution; Communications Society; Computer networks; Peer to peer computing; Propagation delay; Protocols; Telecommunication computing; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE

Conference_Location

Las Vegas, NV

ISSN

1525-3511

Print_ISBN

978-1-4244-1997-5

Type

conf

DOI

10.1109/WCNC.2008.441

Filename

4489472