Introduction
The deployment of LTE otherwise known as 4G is in full swing. Operators in US, Japan, Korea, Finland, Australia, and others started deploying the new technology some years ago and are nearing completion of their network build out. Others in Europe and Asia are on an aggressive schedule to catch-up. We can expect that a majority of the operators will have LTE up and running in the next couple of years. Operators have sunsetted 2G. In some instances they even stopped investing in 3G and are putting all of their investments in the 4G bucket. As mobile networks transition to all IP, operators will be able to re-farm their spectrum assets for 4G deployments. Beyond LTE, operators are looking at LTE-A to provide more efficiency and network bandwidth to consumers.