Characterization of a 3G EV-DO network - A measurement study

Abstract

Abstract-The growth of mobile streaming applications has increased the importance of a better understanding of 3G EV-DO performance. This paper provides performance measurements for a series of experiments that offer an in-depth, crosslayer understanding of EV-DO. Insights are provided for data rate control, packet encapsulation/combination, early completion, packet interarrival time, packet loss pattern and queue management. Key results are: data rates for non-mobile EV-DO users are more stable than previously reported with little variance over short time scales and more random behavior over long time scales; low-level packet encapsulation/combination happens frequently; and custom service provider configurations (e.g., advanced queue management), and operating system differences (e.g., clock granularity for device drivers) can obfuscate network behavior relative to EV-DO specifications.

Assessment of spectral efficiency about 900 MHz using GSM and CDMA technologies for mobile cognitive radio

“…Measurement of signal strength at a distance from base station can better be estimated through Path Loss models stated by Okumara-Hata and Walfisch-Ikegami in city environments in 800 MHz to 2000 MHz bands [7]. For EVDO, one second measurement to establish a relationship between DRC request and SINR by mobile terminal for throughput lead to no conclusion to authors [2]. However, in 2000 1x EVDO, when being served, the mobile calculates its Signal-to-Interference-plus-Noise Ratio (SINR) and determines the highest data rate supportable among 11data rates with the calculated SINR at every slot [9].…”