Patent ID: 11917410
Assignee: GOOGLE LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method of claim 1, wherein:
receiving the first message includes receiving a security mode command message;
determining that the first MAC length is to be used for control plane messages;
generating the second message includes generating a first radio resource control (RRC) message; and
the method further comprises
receiving a third message including (i) a second RRC message containing another information element and (ii) a first MAC having the first MAC length,
computing an expected MAC having the first MAC length,
comparing the expected MAC to the first MAC to verify that the first MAC is a valid MAC,
when the other information element indicates that integrity protection is enabled for user plane messages, generating a fourth message including a data packet and a second MAC having the first MAC length; and
transmitting the fourth message to the base station.