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

Claim 0:
1. An arrangement for a communication device, the communication device is configured to operate in connection with an access node associated with a wireless communication network, and the arrangement comprises controlling circuitry configured to cause:
reception of 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
determination of 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 controlling circuitry is further configured to cause:
extraction of the identifier from the second data packet, the identifier is a radio access layer parameter that comprises a connection identifier associated with a transmitter of the write request;
determination of whether the identifier is trusted by determining whether the connection identifier is trusted;
determination of 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
acceptance of 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 controlling circuitry is further configured to cause determination of 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, a shorter time period is set for the pre-determined time period compared to a duration of the predetermined time period set when the purpose of the communication device is unimportant or noncritical; and

determination of 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 the controlling circuitry is further configured to cause refusal of the write request.