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D2D connectivity to offload traffic from core network

Posted: 21 Nov 2013     Print Version  Bookmark and Share

Keywords:Instituto de Telecomunicacoes  D2D  LTE-A  3GPP 

Analysts have forecasted an explosive growth in traffic demand on mobile broadband systems in the coming years. According to them, cellular deployments will fall short of the required capacity unless there is a dramatic shift towards smaller cells.

Beside femto and pico-cells, there is another method that has yet to be capitalized on, namely direct connectivity between clients in close proximity. A key motivation for device-to-device (D2D) connectivity is its potential for operators to offload traffic from the core network, and the framework for a new communication paradigm to support social networking through localisation, which cannot be supported by present solutions due to their configuration complexity.

D2D connectivity to offload traffic from core network

Figure 1: D2D communication.

3GPP recently finished a feasibility study on Proximity Service (ProSe) in the LTE-A release 12. So far, many researches are focused on node discovery, radio resource management, and so on. The issue of security is less well addressed. We propose a D2D security framework including architecture, requirements and potential solutions.

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