A novel approach for back-haul Self Healing in 4G/5G HetNets

Abstract

4G/5G Heterogeneous Networks (HetNets), which are expected to have a very dense multi-layer network structure, have emerged as a solution to satisfy the increasing demand for high data rates. These networks, similar to other networks, are subject to failures of communication components, which may occur due to many reasons. Self-Healing (SH) is the ability of the network to continue its normal operation in the presence of failures. The contribution of this paper is to introduce a novel SH approach for all network base-stations (BSs) back-hauling in a HetNet. New SH radios are proposed with enabled Cognitive Radio (CR) capabilities for utilizing the spectrum. A Software Defined Wireless Network Controller (SDWNC) is used to handle all control information between all network elements (except user equipment). This novel pre-planned reactive SH approach ensures network reliability under multiple failures. A simulation study is conducted to assess the performance of our approach through the evaluation of the Degree of Recovery (DoR) under single and multiple failures. Our approach can achieve a DoR of at least 10% using only 1 SHR and an enhanced DoR can be achieved using a greater number of SHRs.

Enhancement of the performance of wireless sensor networks using the multihop multiantenna power beacon path selection method in intelligent structures

“…Compared with conventional method connection, the transmitter in multi-hop networks reduces energy consumption for data transfer. Consequently, it may be found in various applications in the real world, such as WSNs, cellular networks, IoT, vehicle or people roadside, and tracking services [44][45][46].…”

QoS aware radio access technology selection framework in heterogeneous networks using SDN

“…For instance, papers [4], [11], [13], and [20] focus only on offloading the traffic from LTE to Wi-Fi networks. Other studies focus on RAT selection solutions for Het-Nets involving only LTE cells such as macro, femto and picocells [12], [17], and [18]. Finally, the works in [2], [3], [14]- [16], and [19] propose a complete integration between LTE and Wi-Fi going beyond the mere offloading from one network to another.…”

“…Moreover, in the domain of RRM in HetNets based on SDN technology, several innovative solutions have recently been proposed in the literature. For instance, the authors in [18] propose the use of SDN to handle all the control information among the network elements to address unexpected back-haul failures in 4G/5G HetNets, but without the inclusion of Wi-Fi technology. In [19] the authors propose a RAT scheme based on SDN where the users connect to the access nodes with the channel capacity that meets the bandwidth requirements of their applications.…”

Fronthaul cell outage compensation for 5G networks

“…Aggregating all received traffic, the macrocell will be able to guarantee the minimum requirements to its users until the failure is repaired, regardless of how long the failure will remain. A heuristic algorithm for the detailed macrocell self-healing procedures can be found in [ 9 ] .…”