What Is MAHO in Mobile Communication?

Introduction: Mobile Assisted Handover (MAHO) is a crucial process in mobile communication systems that ensures seamless connectivity as a user moves between cells. In MAHO, mobile devices actively measure signal strengths and quality from nearby base stations and assist the network in deciding the optimal moment and target cell for handover. This guide explores the concept of MAHO, its role in mobile communication, and how it enhances network performance and user experience in cellular systems like GSM, 4G, and 5G.

There are various types of Handoff viz. mobile initiated and base station initiated. We will understand Mobile initiated or mobile assisted handoff.

MAHO-Mobile Assisted Handoff

The figure depicts mobile assisted handoff. This is used in TDMA based frame structure typically used in GSM system. As shown mobile currently using TS0 and TS4 time slots for conversations with BTS-A.

In order to perform handoff mobile continuously performing RSSI measurements. RSSI stands for Received Signal Strength Indication. From the neighbour cell measurements, mobile decides on which cell or BTS to handoff. It does this based on higher signal strength among the one collected. Normally mobile uses either dedicated idle time slots in TDMA frame or any unused time slots for the RSSI measurements.

As shown Mobile is connected with BTS-A i.e. serving base station while BTS-B and BTS-C are the target BTSs. From BTS-B and BTS-C which ever has higher RSSI at mobile station, mobile will use that BTS for handoff.

Conclusion

MAHO plays a vital role in modern mobile communication systems by ensuring efficient handover processes, maintaining call continuity, and enhancing user experience. By leveraging mobile devices to assist in signal measurement and decision-making, networks can optimize resource allocation and improve overall reliability. As mobile technologies continue to evolve, MAHO remains a cornerstone of seamless connectivity and network efficiency.
➨Also refer Handoff basics and types >>.

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