Method for realizing access layer security, user equipment, and small radio access network node

Abstract

The invention discloses a method for realizing access layer security, user equipment, and a small radio access network node. The method comprises: end-to-end user plane access layer security between user equipment (UE) and a gateway node is executed; and when a micro-communication path exists at the UE, end-to-end control plane access layer security between the UE and an initial access node is executed; and or when a micro-communication path and a macro-communication path exist at the UE, end-to-end control plane access layer security between the UE and a macro eNB in the macro-communication path is executed. The micro-communication path is a communication path in which the UE is connected to a small radio access network node by a radio access link and then is connected to a core network and the macro-communication path is a communication path in which the UE is connected to the macro eNB by a radio access link and then is connected to a core network. Because the user plane security is only executed in an end-to-end mode between the UE and the gateway, the user plane security is guaranteed well; and the control plane security is only executed in an end-to-end mode between the UE and the initial access node or the macro eNB, so that the time delay of the control plane security operation is reduced on the premise that the control plane security is guaranteed. Meanwhile, the mobility performance of the UE is improved; and continuity of user plane data transmission of the UE is guaranteed.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method for realizing access layer security, user equipment and wireless access small nodes. Background technique [0002] The cellular wireless mobile communication system began in the 1980s, and developed from meeting human voice communication needs at the beginning to gradually meeting human basic data communication needs on the basis of voice services. Traditional cellular wireless communication systems are deployed and operated by wireless network operators, and network construction has been carefully planned by operators. figure 1 It is a network topology diagram of a traditional cellular wireless access network, such as figure 1 As shown, the site selection of each macro base station (MNB, macro(e)NB) is determined by the operator's plan, and each macro base station can achieve wireless coverage of hundreds of meters or even thousands of meters, so as to realize the wir...

AI Technical Summary

Problems solved by technology

[0007] In the future, a large number of SRAN-nodes will be densely deployed in UDN, and only a small number of SRAN-nodes have wired backhaul, which makes it very likely that UE communication data will need to be transmitted through two or more air interfaces. How to ensure this mobile communication The security in the system, to ensure the security of the UE's communication data when it is transmitted over two or more air interfaces, is a technical problem that needs to be solved urgently, and there is currently no specific technical solution for its implementation

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