Security key change method, base station, and user equipment
AssigneeHuawei Technologies Co., Ltd.
InventorsJunren Chang, Hao Bi, Yi Guo, Dongmei Zhang, Bo Lin
Life of this patent
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Abstract
The present invention provides a security key change method and a user equipment (UE). The method performed by the UE includes: receiving a key change command message from a master eNodeB (MeNB), wherein the key change command message comprises an indication that a change of a security key between the UE and a secondary eNodeB (SeNB), and the UE is configured with a dual connectivity between the MeNB and the SeNB; updating a security key between the UE and the SeNB; performing random access to the SeNB; and sending a key change complete message to the MeNB.
Claims9
A method comprising:
- receiving, by a user equipment (UE), a message from a master eNodeB (MeNB), wherein the message comprises an indication of a change of a security key between the UE and the MeNB, and wherein the UE is configured with a dual connectivity between the MeNB and a secondary eNodeB (SeNB);
- updating, by the UE according to the indication, the security key between the UE and the MeNB;
- in a case of updating the security key between the UE and the MeNB in a Key Re-key manner, performing, by the UE, random access to both the MeNB and the SeNB, wherein the random access to the MeNB and the SeNB are performed concurrently;
- in a case of updating the security key between the UE and the MeNB in a Key Refresh manner, keeping, by the UE, an active state of an activated secondary cell (SCell) of the SeNB, keeping data transmission between the UE and the SCell, and not performing random access to the SeNB;
- and
- sending, by the UE, a key change complete message to the MeNB.
An apparatus, comprising:
- a receiver, configured to receive a message from a master eNodeB (MeNB), wherein the message comprises an indication of a change of a security key between a user equipment (UE) and the MeNB, wherein the UE is the apparatus or the apparatus is applicable to the UE, and wherein the UE is configured with a dual connectivity between the MeNB and a secondary eNodeB (SeNB);
- a processor;
- a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:
- update, according to the indication, a security key between the UE and the MeNB;
- and
- in a case of updating the security key between the UE and the MeNB in a Key Re-key manner, perform random access to both the MeNB and the SeNB, wherein the random access to the MeNB and the SeNB are performed concurrently;
- in a case of updating the security key between the UE and the MeNB in a Key Refresh manner, keep an active state of an activated secondary cell (SCell) of the SeNB, keep data transmission between the UE and the SCell, and not perform random access to the SeNB;
- and
- a transmitter, configured to send a key change complete message to the MeNB.
A non-transitory computer readable medium storing a program for execution by a processor, the program including instructions for:
- receiving a message from a master eNodeB (MeNB), wherein the message comprises an indication of a change of a security key between a user equipment (UE) which the processor is used for and the MeNB, wherein the UE is configured to have a dual connectivity with the MeNB and a secondary eNodeB (SeNB);
- updating, according to the indication, the security key between the UE and the MeNB;
- and
- in a case of updating the security key between the UE and the MeNB in a Key Re-key manner, performing random access to both the MeNB and the SeNB, wherein the random access to the MeNB and the SeNB are performed concurrently;
- in a case of updating the security key between the UE and the MeNB in a Key Refresh manner, keeping an active state of an activated secondary cell (SCell) of the SeNB, keeping data transmission between the UE and the SCell, and not performing random access to the SeNB;
- and
- sending a key change complete message to the MeNB.
Dependencies are inferred from the claim text.