Affiliations: Computer Networks Research Lab, Electrical Engineering
Technologies Research Center, Sahand University of Technology, Tabriz,
Iran
Note: [] Corresponding author: Akbar Ghaffarpour Rahbar, Computer
Networks Research Lab, Electrical Engineering Technologies Research Center,
Sahand University of Technology, Tabriz, Iran. E-mail: ghaffarpour@sut.ac.ir
Abstract: Establishing incoming calls plays an important role in multi-tier
networks. In a multi-tier network, if a mobile station (MS) wants to move
between different tiers, it has to register at its corresponding tier and
deregister at current tier. The registration and deregistration procedures are
implemented by network and radio signals. In addition, delivery of an incoming
call to the corresponding tier, according to the type of call and the
registration area (RA) of the mobile station, consumes power and energy. Many
schemes like power efficient single registration (PSR), power efficient
multiple registration (PMR) and efficient power management (EPM) have been
introduced to reduce the power and energy consumptions of multi-tier networks.
In this paper, we introduce a new approach to reduce the energy and power
consumptions of multi-tier networks. This new approach is called the optimal
power efficient management (OPEM) scheme that uses the advantages of both PMR
and PSR in signaling concept. The OPEM scheme introduces a new, different and
simple method to reduce the energy consumption of multi-tier networks,
especially in two-tier and three-tier networks. The numerical results confirm
the preference of the OPEM scheme.
Keywords: Two-tier networks, three-tier networks, location registration, paging, power consumption, optimal power efficient scheme
