Patent ID: 11916923
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 7:
8. A method of a communication device, the communication device is configured to operate in connection with an access node associated with a wireless communication network, and the method comprises:
receiving a first data packet comprising a write request for writing at least one of code and data to a non-volatile memory comprised in the communication device; and
determining whether a second data packet comprising an identifier associated with the first data packet is received;
when it is determined that the second data packet comprising the identifier is received the method further comprises:
extracting the identifier from the second data packet, the identifier is a radio access layer parameter that comprising a connection identifier associated with a transmitter of the write request;
determining whether the identifier is trusted by determining whether the connection identifier is trusted;
determining whether the identifier is validated when it is determined that the identifier is trusted by determining whether the identifier, which is the radio access layer parameter that comprises the connection identifier associated with the transmitter of the write request, is comprised in a set of pre-determined identifiers; and
accepting at least a subset of the write request when it is determined that the identifier is trusted and validated; and

when it is determined that the second data packet comprising the identifier associated with the first data packet is not received, the method further comprises:
determining whether a pre-determined time period has expired since the first data packet was received, the predetermined time period is determined based on a purpose of the communication device in the wireless communication network, when the purpose of the communication device is important or critical, setting a shorter time period for the pre-determined time period compare to a duration of the pre-determined time period set when the purpose of the communication device is unimportant or noncritical; and

determining whether the pre-determined time period since the first data packet was received has expired, and when it is determined that the pre-determined time period since the first data packet was received has expired, refusing of the write request.