I would like to know the standard procedure of initiating a call from a mobile device to another device (D2D ) directly without the support of a cellular network operator link. I need the details of the establishing the D2D communication initially, what are the factors that should be fulfilled to establish the D2D communication.
hi.
A radio communication terminal device may include: a cellular wide area ... to realize such a direct communication path between mobile devices: the D2D ... may initiate a transfer of the call to radio channels of another mobile radio cell ... The core network architecture for 3GPP's LTE wireless communication standards..
refer this link:
http://www.dl.edi-info.ir/Operator%20Controlled%20Device-to-Device%20communications%20in%20LTE-Advanced%20Networks.pdf
hello, dear Vishaka Basnayake,
I studied your question.
I think your problem with direct call flow between D2D initiate in a mobile cellular wireless network.
please see an attached link, maybe it will be useful for this mean.
thanks
https://arxiv.org/pdf/1502.00143.pdf
https://arxiv.org/pdf/1310.0720.pdf
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