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1. WO2004100583 - APPAREIL ET PROCEDE PERMETTANT DE GERER DES PROCEDURES DE COMMANDE DE RESSOURCES RADIO UTRAN

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[ EN ]

We claim:

1. A user equipment apparatus (220) having a security configuration (213), the apparatus adapted to receive messages from a UTRAN (210), select messages having a command, select commands requesting a security change procedure (215), the apparatus comprising:
a message handler (240) to receive a received message from the UTRAN, the received message having a received command, said message handler capable of extracting the received command from the received message thereby providing a security change procedure for select messages;
a sequential processor (238) to receive an ongoing command (245) having an ongoing procedure, said sequential processor capable of invoking the ongoing procedure, said sequential processor capable of suspending ongoing processing upon reception of the received message at said message handler, said sequential processor capable of resuming processing of the ongoing procedure upon control of said message handler;
a command store (260) connected to the message handler to save the received command, said command store capable of storing the received command thereby providing saved commands (254) and saved procedure references; and
a security configuration change detector (250) to receive a potential security change command consisting of one of the received command, the saved commands, and the ongoing procedure, said security configuration change detector capable of determining if the potential security change command contains a change to the security configuration;
wherein said message handler is coupled to said command store, is coupled to said sequential processor, and is coupled to said security configuration change detector to save, process, and detect configuration changes in commands respectively, and to determine if there is an existing command at the user equipment, the existing command being one of the saved commands and the ongoing command, such that the user equipment appears to the UTRAN as though it were processing the select commands simultaneously while said sequential processor is actually processing the existing command sequentially.

2. The apparatus as recited in claim 1, wherein if said message handler determines that there is not an ongoing command at said sequential processor, then said message handler sends one of the saved message and the received message to the sequential processor to become the ongoing message.

3. The apparatus as recited in claim 1 or 2, wherein said security configuration change detector rejects a received command if both the existing command and the received command include a change to the security configuration.

4. The apparatus as recited in claim 1, 2 or 3, further comprising a microprocessor (638) to handle user equipment processing.

5. The apparatus as recited in claim 4, wherein said sequential processor is provided by a procedure (646) that is executed by said microprocessor.

6. The apparatus as recited in claim 4, wherein said message handler is provided by an interrupt service routine (646) that is executed by said microprocessor.

7. A method of processing simultaneous commands at a user equipment having a security configuration, the simultaneous commands sent from a UTRAN to the user equipment, the method comprising the steps of:
determining if there is an existing command at the user equipment (520);
if there is an existing command at the user equipment, upon reception (510) of a received command:
suspending the existing command processing;
determining if both the received command and the existing command contain a security configuration change (540,560);
if so determined, rejecting the received command (570);

if not so determined, saving (550) the received command to be processed once the existing command processing completes; and
resuming the existing command processing (530) to allow the existing command processing to complete;
such that the user equipment appears to the UTRAN to be processing commands simultaneously.

8. The method as recited in claim 7 wherein the existing command is an ongoing command currently being processed by the user equipment.

9. The method as recited in claim 7 wherein the existing command is a saved command not currently being processed by the user equipment.