An Integrated Evaluation of Qualities of Wired and Wireless Channels with Consideration of Soft Handoff in CDMA Cellular Networks
نویسندگان
چکیده
In CDMA (Code DivisionMultiple Access) cellular networks, the soft handoff technique allows a mobile host to communicate with multiple base stations simultaneously, improving the transmission quality of the wireless channel and avoiding disconnection upon to base station switching. In this thesis, we define the soft handoff margin as the area in which the mobile host can use soft handoff and evaluate the influence of soft handoff on TCP (Transport Control Protocol) throughput in CDMA cellular networks through simulation. First,to simulate for changing the values of the soft handoff margin and mobile host density, we model the RLP (Radio Link Protocol) in the wireless channel in order to investigate the effect on TCP throughput for different positions of the mobile host between base stations, and identify the effective ranges for the soft handoff margin. Furthermore, we analyze the influence of avoiding disconnection on TCP throughput when the handoff is performed frequently by a moving mobile host.
منابع مشابه
An Integrated Evaluation of Qualities of Wired and Wireless Channels with Consideration of Soft Handoff in CDMA Cellular Systems
In CDMA mobile cellular systems, wireless quality is improved by soft handoff techniques. However, it requires to hold multiple channels of cells, which is likely to increase call blocking at wired channels. It is therefore necessary to consider the entire system including the wired and wireless portions of systems for investigating an effectiveness of the soft handoff. The effect of interferen...
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