Method for uplink transmission of radio link control layer and evolved node b

An Evolved Node B (ENB), comprising a user plane entity and an uplink scheduler, wherein the user plane entity comprises:

• a storing module, configured to, after a terminal initiates Radio Link Control (RLC) layer transmission of an uplink signaling or a service in an uplink acknowledged mode, store an identifier of the terminal and information of a RLC layer segment of the RLC layer transmission, wherein the information of the RLC layer segment comprises a size of the RLC layer segment;
• a detecting module, configured to detect a scheduling request message sent by the terminal, wherein the scheduling request message is sent when the terminal determines that the ENB does not correctly receive the uplink signaling or the service initiated by the terminal, and the scheduling request message is configured to trigger RLC layer retransmission of the uplink signaling or the service;
• and
• a sending module, configured to, when the detecting module detects the scheduling request message configured to initiate retransmission, send the identifier of the terminal and the information of the size of the RLC layer segment stored by the storing module to the uplink scheduler;
• and
• the uplink scheduler is configured to perform uplink authorization to the terminal, determine radio resource to be allocated for the terminal and transmit information of the allocated radio resource to the terminal, according to the identifier of the terminal and the size of the RLC layer segment sent by the sending module.