Data sending control method and device, terminal, base station and medium

Abstract

The embodiment of the invention provides a data sending control method and device, a terminal, a base station and a medium. The method comprises the steps of a PDCP sending end obtaining PDCP state report information sent by a PDCP receiving end; and if the parameter in the PDCP state report information fails to be matched with the current sending state of the PDCP sending end, correcting an encryption parameter of a subsequent PDCP PDU data packet to be sent or to be retransmitted by the sending end according to the parameter in the PDCP state report information so as to obtain the corrected encryption parameter. According to the scheme, the encryption parameter of the subsequent PDCP PDU data packet to be sent or to be resent at the sending end is corrected according to the parameter in the PDCP state report information, so that data recovery is realized.

Description

technical field [0001] The present invention relates to the field of communication technology, and in particular to a data transmission control method and device, a terminal, a base station and a medium. Background technique [0002] In the communication system, in order to protect the user's security from tampering or monitoring, the user data is generally encrypted and sent, and then the receiving end decrypts it according to the protocol after receiving it. figure 1 It is a schematic diagram of the PDCP layer data packet encryption and decryption method in the prior art, such as figure 1 As shown, only when the KEY, COUNT, BEARER, DIRECTION, LENGTH, NEA / EEA of the sending end and the receiving end are the same, the data exchange can be performed normally, otherwise, the wrong data packet will be decrypted. In the real network, KEY, BEARER, DIRECTION, LENGTH, EEA / NEA are semi-static data, which is not easy to make mistakes, and COUNT is easy to make mistakes because it is...

AI Technical Summary

Problems solved by technology

In the real network, KEY, BEARER, DIRECTION, LENGTH, EEA / NEA are semi-static data, which is not easy to make mistakes, and COUNT is easy to make mistakes because it is dynamically updated every time it receives a PDCP PDU packet, which leads to decryption. data exception

A situation that may occur during the communication process is that the encryption parameters used by the sending end are different from the receiving parameters used by the receiving end, and data decryption fails, resulting in the failure to use the business normally.

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