1x Evolution-Data Optimized Revision A (1xEV-DO Rev. A) is a cellular
communications standard that introduces key enhancements to the high data rate packet
switched 1xEV-DO Release 0 standard. The enhancements are driven by the increasing
demand on some applications that are delay sensitive and require symmetric data rates
on the uplink and the downlink. Some examples of such applications being video
telephony and voice over internet protocol (VoIP).
The handoff operation is critical for delay sensitive applications because the
mobile station (MS) is not supposed to lose service for long periods of time. Therefore
seamless server selection is used in Rev. A systems. This research analyzes the
performance of this handoff technique. A theoretical approach is presented to calculate
the slot error probability (SEP). The approach enables evaluating the effects of filtering,
hysteresis as well as the system introduced delay to handoff execution. Unlike previous
works, the model presented in this thesis considers multiple base stations (BS) and
accounts for correlation of shadow fading affecting different signal powers received
from different BSs. The theoretical results are then verified over ranges of parameters of
practical interest using simulations, which are also used to evaluate the packet error rate
(PER) and the number of handoffs per second. Results show that the SEP gives a good indication about the PER. Results also
show that when considering practical handoff delays, moderately large filter constants
are more efficient than smaller ones.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2716 |
| Date | 15 May 2009 |
| Creators | Al-Shoukairi, Maher |
| Contributors | Qaraqe, Khalid A., Serpedin, Erchin |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | electronic, application/pdf, born digital |
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