David Harker, chief executive of DCCH, said: "Their work concerning current assets gave us confi-dence that they would be up to performing the more complex development valuation too, and they didn't let us down.
Mr Downing said: "The confirmation of DCCH's ambitious plans is excellent news for the North East Region and I'm very happy to have played a part in making it possible.
Step 6: On reception of D2D data and DataCtrl signaling, the Rx_D_UE needs 4 TTIs to process them and then sends ACK/NAK back to Tx_D_UE on DCCH to feed back the status of data reception, which will be used for data retransmission by Tx_D_UE.
By monitoring the D2D channels (CCCH and DCCH), an eNB will identify the 'near-far-risk' cellular users and broadcast the information on their allocated resources.
Step 1: At the beginning of D2D transmission, eNB broadcasts the reserved resource including time and frequency of D2D CCCH and DCCH in the broadcasting channel such that all C_UEs and D_UEs have the idea of the information on D2D channels.
Step 2: After that, cellular UEs periodically listen to the signaling on CCCH and DCCH from D2D UEs to ensure whether D2D UEs are close to them.
Based on the explanation of the handshake process during the D2D communication, control signaling is always transmitted on the CCCH and DCCH which is a dedicated channel for D2D communication.
Step 1: At the beginning of D2D transmission, the eNB broadcasts the reserved resource of D2D CCCH and DCCH in the LTE BCH such that all cellular UEs and D2D pairs know the information of D2D channels.
Step 2: After that, cellular UEs periodically listen to the signaling on CCCH and DCCH to ensure whether D2D UEs are near to them.