NEED FOR 5G
The major difference, from a user point of view, between current generations and expected 5G techniques must be something else than increased maximum throughput; other requirements include:
• Lower battery consumption.
• Lower outage probability; better coverage and high
• data rates available at cell edge. Multiple concurrent data transfer paths.
• Around 1Gbps data rate in mobility.
• More secure; better cognitive radio /SDR security.
• Higher system level spectral efficiency.
• Worldwide wireless web (WWWW), wireless based web applications that include full multimedia capability beyond 4G speeds. More applications combined with artificial intelligence (AI) as human life will be surrounded by artificial sensors which could be communicating with mobile phones.
• Not harmful to human health.
• Cheaper traffic fees due to low infrastructure
• deployment costs.
The 5G core is to be a re-configurable, multi technology core. The core could be the convergence of new technologies such as nanotechnology, cloud computing and cognitive radio and based on all IP Platform.
Unfied Frame Vision for Lower Part of Spectrum (< 6 GHz)
• Classical “bit pipe” traffic (type I) with highend spectral efficiency exploits orthogonality and synchronicity, wherever it is possible, e.g. when serving cell-centre users.
• Vertical layering at common time-frequency resources generates a non-orthogonal signal format supporting interference limited transmissions more efficiently (heterogeneous cell structures and cell edge). For high-volume data applications in those cell areas (type II), a multi-cell, multiuser transceiver concept is required.
• Machine-Type Communication (MTC) is expected to be one dominant application of 5G systems. For this sporadic traffic type (type III), a contention based-access technique is attractive, saving overhead by dropping the strict synchronicity requirement.
• Sensor-type traffic (type IV), the open weightless standard  has shown that, from an energy-efficiency perspective, it is beneficial to stretch the transmissions in time by spreading.
High Data Rate Communication in Higher Part of Spectrum (> 10 GHz)
Use the mm-wave bands
• Access link
• Fronthaul link
• Backhaul link
• Device to device links
Establish an overlay network where and when high capacity / data rate is needed
• Seamless integration into 3GPP standards
• Full indoor & outdoor mobility support
• Cost & energy reduction