Security verification when resuming an RRC connection
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsGunnar Mildh, Icaro L. J. da Silva
Life of this patent
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Abstract
According to an aspect, a wireless device sends, while in an RRC inactive state, a message requesting resumption of an RRC connected state. Upon sending the message, the wireless device starts a timer according to a predetermined value. While the timer is running, the wireless device attempts decryption and integrity check handling for packets subsequently received from the wireless network.
Claims22
A method, in a wireless device operating in a wireless network, for providing security of messages, the method comprising:
- sending, while in a Radio Resource Control (RRC) inactive state, a message requesting resumption of an RRC connected state;
- upon sending said message, starting a timer according to a predetermined value;
- and
- while said timer is running, attempting decryption and integrity check handling for all packets received from the wireless network.
A method, in one or more network nodes in or connected to a wireless network, for providing security of messages, the method comprising:
- receiving, from a wireless device operating in a Radio Resource Control (RRC) inactive state, a message requesting resumption of an RRC connected state for the wireless device;
- in response to said message, encrypting and integrity protecting one or more response messages;
- sending the encrypted and integrity protected one or more response messages to the wireless device;
- starting a timer with a predetermined value, in response to receiving the message requesting resumption of the RRC connected state for the wireless device;
- and
- responsive to the timer expiring without receipt of a message from the wireless device verifying resumption of the RRC connected state, removing the RRC connection.
A wireless device configured for operating in a wireless network and for providing security of messages, the wireless device comprising:
- transceiver circuitry;
- and
- processing circuitry operatively associated with the transceiver circuitry and configured to:
- send, while in a Radio Resource Control (RRC) inactive state, a message requesting resumption of an RRC connected state;
- upon sending said message, start a timer according to a predetermined value;
- and
- while said timer is running, attempt decryption and integrity check handling for all packets received from the wireless network.
One or more network nodes in or connected to a wireless network, configured for providing security of messages, the one or more network nodes comprising:
- communication circuitry;
- and
- processing circuitry operatively associated with the communication circuitry and configured to:
- receive, from a wireless device operating in a Radio Resource Control (RRC) inactive state, a message requesting resumption of an RRC connected state for the wireless device;
- in response to said message, encrypt and integrity protect one or more response messages;
- and
- send the encrypted and integrity protected one or more response messages to the wireless device;
- start a timer with a predetermined value, in response to receiving the message requesting resumption of the RRC connected state for the wireless device;
- and
- responsive to the timer expiring without receipt of a message from the wireless device verifying resumption of the RRC connected state, remove the RRC connection.
Dependencies are inferred from the claim text.