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US 11,240,665 B2Granted
Method and device for authenticating UE
AssigneeSamsung Electronics Co., Ltd.
InventorsHong Wang, Lixiang Xu, Weiwei Wang
Life of this patent
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Abstract
The present invention provides a method of how the serving base station notifies UE of the encryption information used in the re-establishment process, how the serving base station finds the UE context information and authenticates the UE, in the 5G architecture. By means of the method of the present invention, the message between the RRC message and the base station can be optimized, the UE is correctly authenticated, and the re-establishment failure is avoided.
Claims20
A method performed by a second base station (BS) in a wireless communication system, the method comprising:
- receiving, from a user equipment (UE), a request for a radio resource control (RRC) connection via one of an RRC re-establishment request message comprising a first authentication token and an RRC resume request message comprising a second authentication token;
- transmitting, to a first BS corresponding to a first cell with which the UE last had an active RRC connection, a UE context request message comprising an identifier of the UE and indication information indicating whether the RRC connection is requested to be re-established or resumed, wherein the UE context request message further comprises the first authentication token in case that the RRC connection is requested to be re-established, and wherein the UE context request message further comprises the second authentication token in case that the RRC connection is requested to be resumed;
- and
- receiving, from the first BS, a UE context request response message comprising a UE context information of the UE.
1 more element
A method performed by a first base station (BS) in a wireless communication system, the method comprising:
- in response to a request for a radio resource control (RRC) connection via one of an RRC re-establishment request message comprising a first authentication token and an RRC resume request message comprising a second authentication token, receiving, from a second BS corresponding to a second cell, a user equipment (UE) context request message comprising an identifier of a UE that had an active RRC connection with the first BS and indication information indicating whether the RRC connection is requested to be reestablished or resumed, wherein the UE context request message further comprises the first authentication token in case that the RRC connection is requested to be re-established, and wherein the UE context request message further comprises the second authentication token in case that the RRC connection is requested to be resumed;
- identifying UE context information of the UE based on the identifier of the UE;
- verifying the UE based on the UE context request message;
- and
- transmitting, to the second BS, a UE context request response message comprising the UE context information of the UE.
2 more elements
A second base station (BS) in a wireless communication system, the second BS comprising:
- a transceiver;
- and
- at least one processor configured to:
- receive, from a user equipment (UE), via the transceiver, a request for a radio resource control (RRC) connection via one of an RRC re-establishment request message comprising a first authentication token and an RRC resume request message comprising a second authentication token,
- transmit, to a first BS corresponding to a first cell with which the UE last had an active RRC connection, via the transceiver, a UE context request message comprising an identifier of the UE and indication information indicating whether the RRC connection is requested to be re-established or resumed, wherein the UE context request message further comprises the first authentication token in case that the RRC connection is requested to be re-established, and wherein the UE context request message further comprises the second authentication token in case that the RRC connection is requested to be resumed, and
- receive, from the first BS, via the transceiver, a UE context request response message comprising UE context information of the UE.
3 more elements
A first base station (BS) in a wireless communication system, the first BS comprising:
- a transceiver;
- and
- at least one processor configured to:
- in response to a request for a radio resource control (RRC) connection via one of an RRC re-establishment request message comprising a first authentication token and an RRC resume request message comprising a second authentication token, receive, from a second BS corresponding to a second cell, by controlling the transceiver, a user equipment (UE) context request message comprising an identifier of a UE that had an active RRC connection with the first BS and indication information indicating whether the RRC connection is requested to be re-established or resumed, wherein the UE context request message further comprises the first authentication token in case that the RRC connection is requested to be re-established, and wherein the UE context request message further comprises the second authentication token in case that the RRC connection is requested to be resumed;
- identify UE context information of the UE based on the identifier of the UE;
- verify the UE based on the UE context request message;
- and
- transmit, to the second BS, via the transceiver, a UE context request response message comprising the UE context information of the UE.
5 more elements
Dependencies are inferred from the claim text.