Method and system for realizing uplink retransmission of access link
An access link and uplink retransmission technology, applied in the field of mobile communications, can solve problems such as lowering system resource utilization and user throughput, failure to receive uplink retransmission signals from relay domain UEs, and retransmission failures, etc., to achieve improved Configuration flexibility and the effect of improving retransmission efficiency
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[0047] figure 2 It is a flowchart of a method for implementing uplink retransmission in the present invention, such as figure 2 As shown, the method of the present invention includes the following steps:
[0048] Step 200: The RN does not correctly receive the uplink transmission of a certain relay domain UE, and generates a NACK feedback for the uplink transmission.
[0049] Step 201: The RN judges whether the corresponding uplink retransmission subframe set by the system conflicts with the uplink transmission of its own backhaul link to the eNB, if there is a conflict, go to step 202; if there is no conflict, go to step 203.
[0050] Step 202: RN configures uplink retransmission additional indication information, and sends it along with NACK feedback and UL Grant information to the UE in the relay domain that needs uplink retransmission. Go to step 204.
[0051] The uplink retransmission additional indication information is used to adjust the position of the uplink retransmission ...
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