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Enhancing Mobility Management in 4g Network Using Hybrid of Mobile and Network Assisted Handoff Technique

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Enhancing Mobility Management in 4g Network Using Hybrid of Mobile and Network Assisted Handoff Technique

ABSTRACT

This paper presents enhancement of mobility management in 4G network using hybrid of mobile and network assisted handoff technique. The aim is to address the current problem of call drop, poor service grade, and re-occurrence of handover failure which has characterized the conventional state of the art 4G network, and as a result affects quality of user experience, especially when THE user is in a mobile state. To this end, this research employed the qualitative research methodology to model a novel hybrid handover optimization algorithm, which uses cell tracking algorithm considering signal strength variable to detect weak cell and then notify the mobile assisted Handoff (MAHO) technique which employed HO information such as call drop rate, call lock probability and traffic patterns to detect the formulated problem and then initiate handover. During this process the Network Control Handover (NCHO) techniques search for cell with free channels and then recommend as the target cell for the handover execution. The model was implemented using Matlab programming code and tested with simulation. The result of the tracking algorithms showed that every cell with signal strength less than -80dB is identified as weak and recommend initiate handover. The hybrid MAHO when integrated with macro cell of HetNet and compared with standard MAHO with an average 1000 active calls attempt recorded percentage reduction is 21.5% in call drop probability.

Keywords: Mobility Management; 4G Network; Call Drop; Network Assisted Handoff Technique

Authored by

Ogili Solomon Nnaedozie

FULL PDF  |  DOI: 10.5281/zenodo.7820478

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