The vehicle routing problem (VRP) is an important aspect of transportation logistics with many variants. This paper studies the VRP with backhauls (VRPB) in which the set of customers is partitioned into two subsets: linehaul customers requiring a quantity of product to be delivered, and backhaul customers with a quantity to be picked up. The basic VRPB involves finding a collection of routes w...

In our previous work [1], [2] we considered the uplink of a hexagonal cellular network topology and showed that linear “one-shot” interference alignment (IA) schemes are able to achieve the optimal degrees of freedom (DoFs) per user, under a decoded-message passing framework that allows base-stations to exchange their own decoded messages over local backhaul links. In this work, we provide the ...

Cellular networks are now rapidly evolving to the renewable heterogeneous network (HetNet) architectures, where a mixture of macro base stations (BSs) and small cell BSs coexist. Particularly, these BSs are partly-powered or self-powered by renewable energy sources (RES). In this context, joint user association and resource allocation is challenging. In addition, wireless backhaul is rapidly be...

The performance of cloud radio access networks (CRAN) is limited by the finite capacities of the backhaul links connecting the cloud with the base-stations (BSs). A promising approach to improving the performance of C-RAN is to augment the backhaul through BS caching, where the BSs pre-store some of the popular contents. In this paper, we first derive a multicast backhaul rate expression based ...

Mobile communication evolution from 2G, 3G to LTE shows a broadband and IP-oriented trend and the architecture of LTE backhaul network turns to be flat. In order to fit these new features, layer 3 routing technology has to be adopted in backhaul network and needs to be modified to fit it. In this paper, a new algorithm, named Self-Adaptive Genetic Algorithm (SAGA), is proposed to meet the deman...

In order to improve the total system throughput by analyzing the resource allocation problems in backhaul links and access links of base stations in ultra-dense network (UDN), a proportional fair resource allocation (PFRA) algorithm was designed for the wireless hybrid hierarchical backhaul network in this paper. First, the base stations were stratified and the frame structure of each base stat...

Wi-Fi based hotspots are used to provide broadband Internet service in airports, campuses, remote areas and others. They are time consuming and expensive to setup as they require substantial wired infrastructure to access the backhaul network and they also suffer from the last mile wireless connectivity problem. Wireless Mesh Networks (WMN) provide an alternative in the form of wireless backhau...

We study about point-to-multi-point (PtMP) downlink transmission that simultaneously accommodates a high-capacity guaranteed backhaul-link and best-effort access-links using orbital angular momentum (OAM) multiplexing. OAM multiplexing is executed on the backhaul-link, other pieces of user equipment use parts modes are not used in backhaul-link. propose prioritized resource-control method maxim...

The deployment of mobile femtocellular networks can enhance the service quality for the users inside the vehicles. The deployment of mobile femtocells generates a lot of handover calls. Also, numbers of group handover scenarios are found in mobile femtocellular network deployment. The ability to seamlessly switch between the femtocells and the macrocell networks is a key concern for femtocell n...

In Wireless Mesh Networks (WMNs), mobile clients may experience frequent handoffs due to the relatively small transmission range of the mesh routers. Each handoff may lead to packet delays and/or packet losses, which limits the performance of real-time applications over WMNs. In this work, we propose BASH—a BackhaulAided Seamless Handoff scheme. BASH takes advantage of the wireless backhaul fea...