Will SDN be part of 5G?

For many, this is no longer a valid question and the case is considered settled with SDN/NFV (Software Defined Networking/Network Function Virtualization) providing the inevitable innovation enablers solving many outstanding management issues regarding 5G. However, given the monumental task of softwarization of radio access network (RAN) while 5G is just around the corner and some companies have started unveiling their 5G equipment already, the concern is very realistic that we may only see some point solutions involving SDN technology instead of a fully SDN-enabled RAN. This survey paper identifies all important obstacles in the way and looks at the state of the art of the relevant solutions. This survey is different from the previous surveys on SDN-based RAN as it focuses on the salient problems and discusses solutions proposed within and outside SDN literature. Our main focus is on fronthaul, backward compatibility, supposedly disruptive nature of SDN deployment, business cases and monetization of SDN related upgrades, latency of general purpose processors (GPP), and additional security vulnerabilities, softwarization brings along to the RAN. We have also provided a summary of the architectural developments in SDN-based RAN landscape as not all work can be covered under the focused issues. This paper provides a comprehensive survey on the state of the art of SDN-based RAN and clearly points out the gaps in the technology.Comment: 33 pages, 10 figure

Quality assessment technique for ubiquitous software and middleware

The new paradigm of computing or information systems is ubiquitous computing systems. The technology-oriented issues of ubiquitous computing systems have made researchers pay much attention to the feasibility study of the technologies rather than building quality assurance indices or guidelines. In this context, measuring quality is the key to developing high-quality ubiquitous computing products. For this reason, various quality models have been defined, adopted and enhanced over the years, for example, the need for one recognised standard quality model (ISO/IEC 9126) is the result of a consensus for a software quality model on three levels: characteristics, sub-characteristics, and metrics. However, it is very much unlikely that this scheme will be directly applicable to ubiquitous computing environments which are considerably different to conventional software, trailing a big concern which is being given to reformulate existing methods, and especially to elaborate new assessment techniques for ubiquitous computing environments. This paper selects appropriate quality characteristics for the ubiquitous computing environment, which can be used as the quality target for both ubiquitous computing product evaluation processes ad development processes. Further, each of the quality characteristics has been expanded with evaluation questions and metrics, in some cases with measures. In addition, this quality model has been applied to the industrial setting of the ubiquitous computing environment. These have revealed that while the approach was sound, there are some parts to be more developed in the future

The impact of business outsourcing on corporate real estate in India

Driven by Western companies\u27 requirements for efficiency and effectiveness, a trend towards outsourcing of business activities to India and other low-cost countries commenced in the early 1990s and has continued to grow at a surprisingly fast pace. In a relatively short timeframe India has become a global hub for back-office services, although the effect on the urban cities is yet to be fully comprehended. As American and European companies continue to relocate their information technology services and other back office works to the subcontinent, there has been a considerable flow-on effect on Indian corporate real estate. This paper addresses two key questions. Firstly, the factors important for Western companies\u27 outsourcing of organisational activities to India, and secondly, the effect of business outsourcing on corporate real estate locational requirements in India. A survey of corporate real estate representatives in India and the UK was conducted with the results providing an insight into the present state and possible future direction of outsourcing for India. This research presents a unique insight into the impacts of Western business outsourcing on corporate real estate in India, and presents findings that are useful to both organisations seeking to relocate business activities to India and for property market analysts looking to understand drivers behind this sustained demand for Indian corporate real estate