cnu/cdma2007092637200709262007-10-11cnu/cdmaTcpdump data set collected from a CDMA 1x EV-DO network in South Korea.We collected tcpdump data from a CDMA 1x EV-DO network in South Korea that provides
high-speed "always on" Internet connectivity in a wide-area mobile environment.the initial version2007-09-262005-08-172006-01-27lee-tcp-cdmaData Set Website144http://networks.cnu.ac.kr/measurement/cdma-1x-evdo/index.htmlhttp://www.crawdad.org/wiki/pmwiki.php?n=Main.Dataset.cnu-cdmacellular networkpacket tracetcpdumpNetwork Performance Analysiscellular networkSince cellular networks are equipped with wide coverage, mobility, and
high data rates, the number of subscribers to the data service of
cellular networks grows rapidly. The number of CDMA2000 1x EV-DO subscribers
in South Korea was 7.7 million at the end of June 2004 according to
the Ministry of Information and Communication in Korea (http://www.mic.go.kr).
Mobile Internet users with CDMA 1x EV-DO terminals use Internet applications
such as web browsing, multimedia streaming, or email. Therefore, the efficient
transport protocol is important to achieve the maximum throughput over
the error-prone wireless link with uctuating bandwidth, large delay, and jitter.
in order to investigates the long-lived TCP bulk throughput over the CDMA
1x EV-DO service, we collected TCP traffic data from a CDMA 1x EV-DO network
in South Korea that provides high-speed "always on" Internet connectivity
in a wide-area mobile environment
This data set allows for measurement-based analysis for TCP performance
that could be used for the correct model of the 3G wireless link characteristic
and for the real-world simulation of TCP behavior over the 3G wireless network.Code Division Multiplexing Access (CDMA) 1x EVolution-Data Only (EV-DO),
which was finalized by the 3G Partnership Project 2 (3GPP2) and was published
by the Telecommunication Industry Association (TIA) as Interim Standard (IS)-856,
provides high-speed data service (2.4Mbps/153Kbps for downlink/uplink)
with wide coverage and mobility. The CDMA 1x EV-DO service with high-speed
"always on" connectivity in a wide-area mobile environment is being deployed
throughout the world. In South Korea, since 2002, two carriers (KTF and SK Telecom)
have deployed CDMA2000-based 1x EV-DO services which enable Video on Demand (VOD)
and Multimedia Message Service (MMS).
The CDMA 1x EV-DO system addes a high-speed data solution for existing IS-95
or CDMA 1x service providers while they maintain the compatibility with the
frequency and RF modules. While the specification of 1x EV-DO is based
on the High Data Rate (HDR) proposal from Qualcomm, Inc., it includes new features
such as Incremental Redundancy (IR) Hybrid ARQ for improving system performance
against the fast fading condition.
The 1x EV-DO system provides large service coverage as well as handover with
high bandwidth. In addition, it employs a time-shared downlink which serves
only one user at any instant in time-multiplexed manner. Therefore, the mobile
terminal calculates its Signal-to-Interference-plus-Noise Ratio (SINR) and determines
the highest data rates among available 11 data rates with the calculated
SINR at every slot. Based on the periodic report of the data rates
every 1.67ms (1 slot duration), the base station schedules slot allocation.
The characteristics and the performance of cellular links have been widely
studied in 2/3G networks (i.e., General Packet Radio Service (GPRS), IS-95A,
IS-95B, CDMA2000, and CDMA 1x EV-DO). It is well known that Forward Error
Correction (FEC) and link-layer retransmissions have been implemented to
defeat the challenging radio propagation environments. When a packet is transmitted,
the channel has to be allocated to each packet, which also causes the
variable delay. In CDMA 1x EV-DO networks, the peak rate of downlink is
specified as 2.4Mbps and that of uplink as 153Kbps per user, and the maximum number
of data users is 16. Recently, 1x EVolution Data and Video (EV-DV), which
is being standardized, is expected to provide 3Mbps/1.5Mbps downlink/uplink
data rates by integrating voice and data channels.A laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance was tested with the Iperf
tool which generates long-lived bulk traffic between the laptop and
the Linux/FreeBSD machine.
The packet traces were collected both at the server and at the client
with tcpdump or windump.51200709262007-10-11the initial version.cnu/cdma/tcpdumpTcpdump data set collected from a CDMA 1x EV-DO network in South Korea.We collected tcpdump data from a CDMA 1x EV-DO network in South Korea that provides
high-speed "always on" Internet connectivity in a wide-area mobile environment.2007-09-262005-08-172006-01-27Network Performance AnalysisWe used a laptop with a CDMA 1x EV-DO USB modem made by CMOTECH
and a Linux or FreeBSD machine for our experiments. The operating
systems of the laptop for the experiment is Microsoft Windows XP
home edition. The operating systems of Unix machines for the experiments
are Linux kernel 2.4 and FreeBSD 4.9 release.
The laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance has been tested with
the Iperf tool which generates long-lived bulk traffic between the laptop
and a Linux/FreeBSD machine. The Linux/FreeBSD machine was located
at the research networks called "KOREN" which is connected to the network of
a CDMA 1x EV-DO carrier via high-speed Korea Internet Exchange Points (KIX, KT-IX).
Although the location is not the perfect place to monitor the CDMA 1x EV-DO
link performance, it is assumed that the average TCP throughput of the CDMA 1x
EV-DO subscribers could be approximately found from many runs of experiments.
The Maximum Segment Size (MSS) was set to 1460 or 1448 bytes, SACK was
enabled, and the duration of the test was 150 - 300 seconds. It is
believed that the test duration is long enough to observe the TCP steady
state performance, since the outstanding window has become stable within
20 seconds in our measurements.
The packet traces have been collected both at the server and at the client with
tcpdump or windump./download/cnu/cdmacnu/cdma137200709262007-10-11the initial versioncnu/cdma/tcpdump/1x_EV-DO_downlinkTcpdump trace colleced from CDMA 1x EV-DO Downlink.Tcpdump trace colleced from CDMA 1x EV-DO Downlink.false2007-09-262005-08-172005-09-07This trace was collected from the downlink of a CDMA 1x EV-DO network.
A laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance has been tested with
the Iperf tool which generates long-lived bulk traffic between the laptop
and a Linux/FreeBSD machine. The Linux/FreeBSD machine was located
at the research networks called "KOREN" which is connected to the network of
a CDMA 1x EV-DO carrier via high-speed Korea Internet Exchange Points (KIX, KT-IX).
By downlink traffic, we mean the traffic from the Linux/FreeBSD machine to
the laptop.
Traces 1-6 and 8-9 below are sender-receiver pairs. For trace 7 below,
the receiver trace was not captured because that the throughput and loss rate
could be examined with the sender trace.
At the TCP sender and receiver, we coud enable or disable the TCP timestamp option.
Traces tagged with "TCP timestamp" below are captured after the TCP timestamp option
enabled at both the sender and the receiver.
1. CDMA 1x EV-DO Downlink, 20050817 tcpdump data at the iperf sender (34 connections, 5-minute duration iperf, TCP timestamp)
2. CDMA 1x EV-DO Downlink, 20050817 tcpdump data at the iperf receiver (34 connections, 5-minute duration iperf, TCP timestamp)
3. CDMA 1x EV-DO Downlink, 20050817-2 tcpdump data at the iperf sender (16 connections, 5-minute duration iperf, TCP timestamp)
4. CDMA 1x EV-DO Downlink, 20050817-2 tcpdump data at the iperf receiver(16 connections, 5-minute duration iperf, TCP timestamp)
5. CDMA 1x EV-DO Downlink, 20050820 tcpdump data at the iperf sender (38 connections, 5-minute duration iperf, TCP timestamp)
6. CDMA 1x EV-DO Downlink, 20050820 tcpdump data at the iperf receiver(38 connections, 5-minute duration iperf, TCP timestamp)
7. CDMA 1x EV-DO Downlink, 20050828 tcpdump data at the iperf sender (30 connections, 5-minute duration iperf, TCP timestamp)
8. CDMA 1x EV-DO Downlink, 20050907 tcpdump data at the iperf sender (116 connections, 2.5-minute duration iperf, TCP timestamp)
9. CDMA 1x EV-DO Downlink, 20050907 tcpdump data at the iperf receiver (116 connections, 2.5-minute duration iperf, TCP timestamp)tcpdump format/download/cnu/cdma/1x_EV-DO_downlinkcnu/cdma/tcpdump138200709262007-10-11the initial versioncnu/cdma/tcpdump/1x_EV-DO_uplinkTcpdump trace colleced from CDMA 1x EV-DO Uplink.Tcpdump trace colleced from CDMA 1x EV-DO Uplink.false2007-09-262005-08-212005-09-07This trace was collected from the uplink of a CDMA 1x EV-DO network.
A laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance has been tested with
the Iperf tool which generates long-lived bulk traffic between the laptop
and a Linux/FreeBSD machine. The Linux/FreeBSD machine was located
at the research networks called "KOREN" which is connected to the network of
a CDMA 1x EV-DO carrier via high-speed Korea Internet Exchange Points (KIX, KT-IX).
By uplink traffic, we mean the traffic from the laptop to the Linux/FreeBSD machine.
Traces 1-2 below are sender-receiver pairs. For traces 3-4 below, the receiver trace was
not captured because that the throughput and loss rate could be examined
with the sender trace.
At the TCP sender and receiver, we coud enable or disable the TCP timestamp option.
Traces tagged with "TCP timestamp" below are captured after the TCP timestamp option
enabled at both the sender and the receiver.
1. CDMA 1x EV-DO Uplink, 20050821 tcpdump data at the iperf sender (35 connections, 5-minute duration iperf)
2. CDMA 1x EV-DO Uplink, 20050821 tcpdump data at the iperf receiver (35 connections, 5-minute duration iperf)
3. CDMA 1x EV-DO Uplink, 20050906 tcpdump data at the iperf sender (146connections, 2.5-minute duration iperf, TCP timestamp)
4. CDMA 1x EV-DO Uplink, 20050907 tcpdump data at the iperf sender (110connections, 2.5-minute duration iperf, TCP timestamp)tcpdump format/download/cnu/cdma/1x_EV-DO_uplinkcnu/cdma/tcpdump139200709262007-10-11the initial versioncnu/cdma/tcpdump/1x_downlinkTcpdump trace colleced from CDMA 1x Downlink.Tcpdump trace colleced from CDMA 1x Downlink.false2007-09-262005-08-212005-08-30This trace was collected from the downlink (a Linux/FreeBSD machine to a mobile labtop)
of a CDMA 1x network.
For traces 1-2 below, the receiver trace was not captured because that the throughput and
loss rate could be examined with the sender trace.
1. CDMA 1x Downlink, 20050821 tcpdump data at the iperf sender (11 connections, 5-minute duration iperf)
2. CDMA 1x Downlink, 20050830 tcpdump data at the iperf sender (38 connections, 5-minute duration iperf)tcpdump format/download/cnu/cdma/1x_downlinkcnu/cdma/tcpdump140200709262007-10-11the initial versioncnu/cdma/tcpdump/1x_EV-DO_downlink_ktxTcpdump trace colleced from CDMA 1x EV-DO Downlink at a fast train moving in the speed of 295Km/hour.Tcpdump trace colleced from CDMA 1x EV-DO Downlink at a fast train, called KTX, moving from Seoul to Chonan (about 70Km) in Korea, in the speed of 295Km/hour.false2007-09-262005-08-302005-08-30This trace was collected from the downlink of a CDMA 1x EV-DO network
when a mobile client (laptop) was in a fast train, called KTX.
During the measurement, the train was moving about 70 Km in the speed
of 295 Km/hour from Seoul to Chonan in Korea.
The laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance has been tested with
the Iperf tool which generates long-lived bulk traffic between the laptop
and a Linux/FreeBSD machine. The Linux/FreeBSD machine was located
at the research networks called "KOREN" which is connected to the network of
a CDMA 1x EV-DO carrier via high-speed Korea Internet Exchange Points (KIX, KT-IX).
By downlink traffic, we mean the traffic from the laptop to the Linux/FreeBSD machine.
For trace 1 below, the receiver trace was not captured because that the throughput
and loss rate could be examined with the sender trace. 3-minute trace was
enough to capture the TCP steady-state behavior, so the latter experiements
was performed for 3 minutes to reduce the experiment time.
1. CDMA 1x EV-DO Downlink at KTX express train from Seoul to Chonan, 20050830 tcpdump data at the iperf sender (2 connections, 16-minute duration iperf, 3-minute duration iperf)tcpdump format/download/cnu/cdma/1x_EV-DO_downlink_ktxcnu/cdma/tcpdump141200709262007-10-11the initial versioncnu/cdma/tcpdump/1x_EV-DO_timestampTcpdump trace colleced from CDMA 1x EV-DO Downlink with TCP timestamp option enabled.Tcpdump trace colleced from CDMA 1x EV-DO Downlink with TCP timestamp option enabled.false2007-09-262006-01-252006-01-27At the TCP sender and receiver, we coud enable or disable the TCP timestamp option.
To compare the typical packet loss patterns of TCP connections with/without
the TCP timestamp option over CDMA 1x EV-DO downlink, we collected this trace
from the downlink of a CDMA 1x EV-DO networkwith TCP timestamp enabled.
A laptop was connected to the network of a CDMA 1x EV-DO carrier through
the point-to-point protocol (PPP). TCP performance has been tested with
the Iperf tool which generates long-lived bulk traffic between the laptop
and a Linux/FreeBSD machine. The Linux/FreeBSD machine was located
at the research networks called "KOREN" which is connected to the network of
a CDMA 1x EV-DO carrier via high-speed Korea Internet Exchange Points (KIX, KT-IX).
By downlink traffic, we mean the traffic from the Linux/FreeBSD machine to
the laptop.
For traces 1-4 below, the receiver trace was not captured because that
the throughput and loss rate could be examined with the sender trace.
1. CDMA 1x EV-DO Downlink, 20060125 tcpdump data at the iperf sender (20 connections, 4.5 minute iperf, TCP timestamp)
2. CDMA 1x EV-DO Downlink, 20060125 tcpdump data at the iperf sender (8 connections, 4.5 minute iperf, TCP timestamp)
3. CDMA 1x EV-DO Downlink, 20060126 tcpdump data at the iperf sender (32 connections, 4.5 minute iperf, NO TCP timestamp)
4. CDMA 1x EV-DO Downlink, 20060127 tcpdump data at the iperf sender (59 connections, 4.5 minute iperf, NO TCP timestamp)tcpdump format/download/cnu/cdma/1x_EV-DO_timestampcnu/cdma/tcpdump144cnu/cdmakaist/wibroYoungseok Leelee@cnu.ac.krChungnam National UniversityDept. of Computer Science and EngineeringAssistant ProfessorOffice room no. 143, Building no. Eng. 2, 220 Gung-dong, Yoosung-gu, Daejon, 305-764, Korea+82-42-821-6655+82-42-822-4997http://networks.cnu.ac.kr/~yslee/lee-tcp-cdmaYoungseok LeeMeasured TCP Performance in CDMA 1x EV-DO NetworkPAM 2006, 7th Passive and Active Measurement conference2006--03--http://www.pamconf.org/2006/papers/s1-lee.pdfAdelaide, AustraliaThis paper investigates the long-lived TCP bulk throughput over the CDMA 1x
EV-DO service that provides high-speed \always on" Internet connectivity in a
wide-area mobile environment. Although the peak rates of downlink/uplink are
speci ed as 2.4 Mbps/153 Kbps, the user-experienced application-layer
throughput has not been much reported and analyzed. In our experiment, it was
shown that average TCP throughputs over downlink/uplink are 572.5/94.7Kbps and
the average packet loss rates of 1x EV-DO downlink/uplink are 0.2/4.7%. The
average end-to-end round-trip delay was 417.4ms with the variance of 14,995ms.
Although the packet loss rate is low, bursty packet losses frequently occur
because of packet corruption with TCP checksum failures, which result in TCP
performance degradation by the retransmission timeout. Our study showed that
this TCP checksum errors are related with the TCP/IP header compression
algorithm at link layer protocols such as PPP. Our measurement-based analysis
of TCP performance could be used for the correct model of the 3G wireless link
characteristic and for the real-world simulation of TCP behavior over the 3G
wireless network.measurementwirelesscnu_cdmacrawdadcnu/cdma20060301