Message authorization code managing method, device and system

Abstract

The embodiment of the invention discloses a message authentication code MAC-I managing method, device and system, wherein the method comprises the steps of determining an UE which can start an RRC connection rebuilding process; determining a cell meeting the RRC connection rebuilding condition for the UE and computing and storing the MAC-I of the cell; receiving an RRC connection rebuilding request message with the MAC-I and a cell mark the corresponding cell of which belongs to the cell meeting the RRC connection rebuilding condition, which are sent by the UE; and comparing the MAC-I in the RRC connection rebuilding request message with the MAC-I of the cell corresponding to the cell mark, and deciding whether to accept the RRC connection rebuilding request of the UE or not. The embodiment of the invention provides a detailed technical scheme for MAC-I management by aiming at an intra-eNB scene, clarifies an occasion and a mode for generating MAC-I and effectively supplements the MAC-I management of an LTE system.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, to a message authentication code (Message Authentication Code used for data Integrity of signaling messages, MAC-I) management method, device and system. Background technique [0002] In the current Long Term Evolution (LTE) system, when certain abnormal conditions (such as handover failure, radio link failure or RRC connection reconfiguration failure) occur, the user equipment (UE) will initiate a radio resource control protocol (Radio Resource Control, RRC) connection reestablishment process. At the beginning of the RRC connection re-establishment, the UE will calculate a MAC-I, and set it as a part of the user equipment identification (UE ID) in the RRC connection re-establishment request message sent to the cell where the re-establishment process takes place. After receiving the RRC connection re-establishment request message, the cell compares the...

AI Technical Summary

Problems solved by technology

For inter-eNB (between different eNBs) handover scenarios, in the handover preparation phase, the source cell will calculate MAC-I and send it to the target cell through the handover preparation message, while for intra-eNB (different MAC-I within the same eNB) In the handover scenario between cells), in the handover preparation stage, the process of the source cell sending the MAC-I to the target cell is actually a process in which the eNB manages the MAC-I of the cell under its jurisdiction. However, there is currently no specific information on how to implement this process. solution

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