SDN Wireless Controller Placement Problem-The 4G LTE-U Case

SDN Controller for LTE Networks

LTE (Long Term Evolution) networks are capable of handling tremendous user loads with the current user base estimated to be in hundreds of millions. LTE is superior to older telecommunication networks, yet it suffers from issues like inflexible & expensive equipment, complex control plane protocols, coupling of control and data planes in devices and equipments and so on. It is therefore decided...

Optimal 4G and LTE Cellular Tower Placement Strategy

the number of cell phone subscribers is increasing use of cell phones in remote areas and to increase their coverage and to all the places it has sought to expand the network service providers. The cost of placing a cell tower, depending on the height and location, and because it can be very expensive, they have to be placed strategically to reduce the cost. Number of service providers has incr...

Wireless Backhaul for 4G LTE and WiMAX Networks

Next generation 4G technologies such as LTE and WiMAX promise to deliver an entirely new range of mobile broadband services. The dramatic growth in data rates, driven by open standard smartphones running data hungry applications, will drive a significant increase in mobile backhaul requirements. Microwave radios have long been the global technology of choice for backhaul infrastructure. Millime...

LTE and the Evolution to 4G Wireless Design and Measurement Challenges Bonus Material: Security in the LTE-SAE Network

The Role of Inter-Controller Traffic for Placement of Distributed SDN Controllers

We consider a distributed Software Defined Networking (SDN) architecture adopting a cluster of multiple controllers to improve network performance and reliability. Besides the Openflow control traffic exchanged between controllers and switches, we focus on the control traffic exchanged among the controllers in the cluster, needed to run coordination and consensus algorithms to keep the controll...