Data forwarding method in relay network, device and system
A technology of relay network and forwarding method, applied in the field of data forwarding method, device and system, can solve the problem of being unable to confirm whether the UE has received the data correctly, and achieve the effect of lossless handover
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[0054] In a relay network, data that has not been encapsulated by PDCP is called a Serving Data Unit (hereinafter referred to as: SDU); and data that has been encapsulated by PDCP is called a protocol data unit (Protocol Data Unit; hereinafter referred to as: PDU). ). figure 1 It is a flow chart of an embodiment of the data forwarding method in the relay network of the present invention. Such as figure 1 As shown, the embodiment of the present invention provides a data forwarding method in a relay network, including:
[0055] Step 101: Perform PDCP encapsulation on the SDU corresponding to the first PDU not confirmed by the UE to obtain a second PDU, wherein the second PDU includes: the SDU and the SN allocated for the SDU in the first PDU.
[0056] The first PDU not confirmed by the UE refers to: if the RN sends the PDCP-encapsulated SDU to the UE, that is, after sending the first PDU, and does not receive the confirmation message fed back by the UE for the first PDU, it is...
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