Data sending control method and device, terminal, base station and medium
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A control method and technology of a control device, which are applied in the field of communication, can solve the problems of abnormal decryption data, error-prone, and error-prone, etc., and achieve the effect of data recovery.
Active Publication Date: 2021-06-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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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 exceptio
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[0037] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0038]In a wireless communication system, in order to ensure that the data transmitted through the air interface can be sequentially delivered to the application layer at the receiving end, the sending end assigns sequence numbers to the data packets. Specifically, at the PDCP (Packet Data Convergence Protocol, Packet Data Convergenc...
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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...
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