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Managing security keys in communication system

A security key and security key management technology, applied in the field of wireless communication, can solve problems such as inability to correctly support encryption

Pending Publication Date: 2022-05-13
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, UE and SN cannot properly support encryption after transitioning back to connected state

Method used

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  • Managing security keys in communication system
  • Managing security keys in communication system
  • Managing security keys in communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 An example wireless communication network 100 is depicted in which an example UE 102 operates in dual connectivity with a MN 104 and an SN 106 of a RAN 108 . To protect the confidentiality and integrity of messages, UE 102 and devices operating in RAN 108 utilize security keys. UE 102 and RAN 108 implement the key management techniques of the present disclosure, discussed in detail below.

[0023] In different configurations of the wireless communication system 100, the MN 104 can be implemented as a master eNB (MeNB) or master gNB (MgNB) node, the SN 106 can be implemented as a secondary eNB (SeNB) or secondary gNB (SgNB) node, and the UE 102 communicates with MN 104A and SN 106A via the same RAT, such as EUTRA or NR, or a different RAT. In some cases, MeNB or SeNB is implemented as ng-eNB instead of eNB. When MN 104 is a Mng-eNB and SN 106 is a SgNB, UE 102 may be in a Next Generation (NG) EUTRA-NR DC (NGEN-DC) with the Mng-eNB and SgNB. When the MN 104 i...

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PUM

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Abstract

A secure key management method capable of being implemented in a user equipment (UE) capable of simultaneously communicating with a primary node (MN) and a secondary node (SN). The method comprises transitioning (504) from a connected state in which the UE communicates with the MN using a first security key and communicates with the SN using a second security key (502) to a deactivated state in which a radio connection between the UE and a radio access network (RAN) is suspended. The method further comprises performing a procedure for transitioning from the deactivated state to the connected state, comprising generating a new RAN key, KSN, corresponding to the SN (506) and generating a new security key for communicating with the SN based at least on the new RAN key, KSN (508).

Description

technical field [0001] The present disclosure relates generally to wireless communications, and more particularly, to methods and apparatus for managing security keys for secure communications. Background technique [0002] To protect the confidentiality and integrity of traffic (ie, against inspection in the event of unauthorized interception and alteration, respectively), network devices operating in cellular networks utilize various security keys. For example, 5G cellular networks support communication with certain network nodes such as 5GNode B (gNB) operating in the Radio Access Network (RAN) or Access and Mobility Management Function (AMF) operating in the core network) Communicates a hierarchy of security keys, communicates certain types of information (eg, control plane data, user plane data), and provides certain security features (eg, confidentiality protection through encryption, integrity protection). In some cases, a user equipment (or user equipment, often den...

Claims

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Application Information

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IPC IPC(8): H04W12/041H04W12/0433H04W12/033H04W12/106H04W76/15H04W76/27H04L9/32
CPCH04W12/041H04W12/0433H04W12/033H04W12/106H04W76/15H04W76/27H04L9/3242H04L2209/80H04W12/04H04L9/0819H04L9/0861
Inventor C-H.吴
Owner GOOGLE LLC