Abstract
In this paper, an analytical approach for estimating the network capacity for voice communications on LTE-based public safety networks is presented. The network is modeled using Markov birth and death process. In order to provide the required Grade of Service for LTE-based public safety users, the minimum number of channels required for different levels of users' priority is calculated. The results for some performance metrics such as throughput, delay probability, and channel utilization are obtained. The results obtained from the simulation is compared with the existing network model such as Erlang C. Results show that the existing network model show similarities and differences in predicting the channel estimation of the deployed LTE networks for public safety communications. The results can help the network designer in the proper dimensioning of LTE-based public safety network.
Highlights
The public safety agencies such as the fire brigade, police, and emergency medical services (EMS) have over the years faced an increasing pressure on their safety operations due to growing natural and man-made disasters all over the world
If the existing Professional Mobile Radio (PMR)-Terrestrial Trunked Radio (TETRA) is integrated over commercial Long Term Evolution (LTE) network for public safety, this in turn will provide speed and broadband services for real time services with higher throughput
Using traffic volume of 1.35 Erlang from Table 1, the plot of cost per time for the plans is shown in Fig. 12, in order to optimize the cost of implementation of LTE-based public safety network, the cost (OPEX) should stay below the curves
Summary
The public safety agencies such as the fire brigade, police, and emergency medical services (EMS) have over the years faced an increasing pressure on their safety operations due to growing natural and man-made disasters all over the world. The existing Private/Professional Mobile Radio (PMR) devices used by the agencies for public safety wireless communication systems are based on narrowband and wideband technology. These devices are frequently not enough to meet users’ needs in many critical situations. Public safety users can be categorized as those whose daily operations are to ensure safety and welfare of people around the world. These include police, fire fighters, and emergency medical services [1]. The public safety agencies are referred to as the ‘First Responders’
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