Abstract
Mobility and radio resource management plays a major role in Quality of Service provisioning for cellular communication systems. Due to the limited radio coverage of a cell, an ongoing call while being handed off may get dropped. We develop an effective and efficient handoff scheme using mobile controlled handoff and fractional guard channel techniques, where mobile station measures the signal strength from surrounding base stations and interference level on all channels. A handoff can be initiated if the signal strength of the serving base station is lower than that of other base station by certain threshold. Two models are proposed to calculate the blocking probability of new calls and the dropping probability of handoff calls, using call admission control scheme in a cellular system. Numerical analyses of both the models are carried out to investigate the impact on performance of the parameters and comparisons with conventional channel reservation schemes.
Highlights
With the increased demand for wireless communication systems a promised Quality of Service (QoS) is required in a satisfactory manner, to manage the incoming new calls and handoff calls more efficiently
We proposed two channel allocation schemes that handle the channels based on signal quality of handoff calls
We developed and analysed an efficient handoff scheme using mobile controlled handoff and fractional guard channel techniques, where Mobile station (MS) measures the signal strength from surrounding base station (BS) and interference levels on all channels for re-handoff decision
Summary
With the increased demand for wireless communication systems a promised Quality of Service (QoS) is required in a satisfactory manner, to manage the incoming new calls and handoff calls more efficiently. V. Goswami et al.: Analytical Modeling for Handling Poor Signal Quality Calls in Cellular Network if the signal strength of the serving BS is lower than that of another BS by a certain threshold. Good quality signal calls are received and served successfully while poor signal quality calls are dropped or handed over to other BSs. In this paper, we focus our attention in a generic communication network that guarantees seamless mobility to its customers. The poor signal quality incoming handoff calls are re-handed off to other BSs. The objective is to decrease the probability of dropping of a call due to low quality signal and make a trade-off between new and handoff calls so that all the channels efficiently used.
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