PS-CARA: Context-Aware Resource Allocation Scheme for Mobile Public Safety Networks

Abstract

The fifth-generation (5G) communications systems are expecting to support users with diverse quality-of-service (QoS) requirements. Beside these requirements, the task with utmost importance is to support the emergency communication services during natural or man-made disasters. Most of the conventional base stations are not properly functional during a disaster situation, so deployment of emergency base stations such as mobile personal cell (mPC) is crucial. An mPC having moving capability can move in the disaster area to provide emergency communication services. However, mPC deployment causes severe co-channel interference to the users in its vicinity. The problem in the existing resource allocation schemes is its support for static environment, that does not fit well for mPC. So, a resource allocation scheme for mPC users is desired that can dynamically allocate resources based on users’ location and its connection establishment priority. In this paper, we propose a public safety users priority-based context-aware resource allocation (PS-CARA) scheme for users sum-rate maximization in disaster environment. Simulations results demonstrate that the proposed PS-CARA scheme can increase the user average and edge rate around 10.3% and 32.8% , respectively because of context information availability and by prioritizing the public safety users. The simulation results ensure that call blocking probability is also reduced considerably under the PS-CARA scheme.

On the Application of Machine Learning to the Design of UAV-Based 5G Radio Access Networks

“…Hidden information in user traffic pattern and priority of some users over the others can be extracted from data via ML techniques in order to build an area traffic map. UAV features, such as flight time and speed, and characteristics of the RAN interface, can be used in combination with a path loss map and specific information of weather conditions [11,34,40,55,65].…”

Role of UAVs in Public Safety Communications: Energy Efficiency Perspective

“…The major limitation in UAVs is the limited energy and flight time, thus to mitigate this, energy consumption is managed in a real-time by jointly optimizing the energy harvesting time and power control. In [92], specifically for safety scenarios, a context-aware resource allocation scheme was proposed. This scheme considers users context information during resource allocation which in turn is more energy efficient as compared with the schemes that do not.…”

Downlink Power Allocation Strategy for Next-Generation Underwater Acoustic Communications Networks

“…We adopted the cellular concept in this paper [14][15][16][17][18][19][20][21], which is based on one-tier cellular structure, as shown in Figure 1. The red circles and green squares represent the underwater base station controllers (UBSCs) and underwater base stations (UBSs), respectively.…”

“…Research has been proposed to assess the features of UAC networks in the existing literature. However, features related to UAC networks still need to be addressed on an emergent basis, including consideration of complicated scenarios such as terrestrial cellular networks [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. The existing works Electronics 2019, 8,1297 2 of 13 related to underwater communication have been considered simple network architectures and have been mostly focus on the assessment of underwater channel model and routing protocols [28][29][30][31].…”