D2D, V2V, V2I
D2D Operator Controlled D2D Communication and Challenges: Overview: Different from traditional device-to-device communication technologies such as Bluetooth and WiFi-direct, the operator controls the communication process to provide better user experience and make profit accordingly Up to now, D2D is not in 3GPP, because the D2D function was only envisioned as a tool to reduce the cost of local service provision, which is fractional according to the operators’ current market statistics. However it is changing for several new market trends: Context-aware applications as value added services provided by Operator Cell Phone of a owner can be the hub for consumer electronic devices to connect to their networks; D2D from these devices to Cell Phone Disadvantages of traditional D2D technologies like Bluetooth and WiFi-direct (although they are free) compared to Operator controlled cellular network: Require manual pairing Interference is uncontrollable on the crowded
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