Wireless telecommunication system
View Patent ↗A method and apparatus for processing a message in a mobile, telecommunications device. The method comprises: receiving a Cell Update Confirm (CUC) message; determining whether the device has an empty C_RNTI variable; when the device has an empty C_RNTI variable, determining whether the CUC message includes a new C_RNTI; when the CUC message includes a new C_RNTI and the CUC message would cause the device to enter a state which requires the UE to respond to the message before entering the state, carrying out at least one further step prior to entering the state.
1. A User Equipment (UE) device configured for use in a mobile telecommunications system, including a transmitter and receiver component configured to receive messages and transmit messages, the UE being arranged to:
receive a Cell Update Confirm (CUC) message;
determine whether there is an empty C_RNTI (Cell Radio Network Temporary Identifier) variable;
when there is an empty C_RNTI (Cell Radio Network Temporary Identifier) variable, determine whether the received CUC message includes a C-RNTI (Cell Radio Network Temporary Identifier);
when the CUC message does not include a C_RNTI (Cell Radio Network Temporary Identifier) and the CUC message would cause the UE to enter a state that requires the UE to transmit a respond message before entering the state, setting INVALID_CONFIGURATION to TRUE prior to entering the state.
2. The device of claim 1 further arranged to transmit a cell update message subsequent to setting the INVALID_CONFIGURATION to TRUE.
3. The device of claim 2 wherein cell update message includes a field indicating that the cause for the cell update message is cell reselection.
4. The device of claim 1 further arranged to return to the idle state subsequent to setting the INVALID_CONFIGURATION to TRUE.
5. The device of claim 1 further arranged to act on the cell update confirm message without transmitting a response.
6. A method for processing a Cell Update Confirm (CUC) message in a User Equipment (UE) device, the UE configured for use in a mobile telecommunications system including a transmitter and receiver component configured to receive messages and transmit messages, the method comprising:
receiving a Cell Update Confirm (CUC) message;
determining whether there is an empty C_RNTI (Cell Radio Network Temporary Identifier variable;
determining whether the received CUC message includes a C-RNTI (Cell Radio Network Temporary Identifier) when there is an empty C_RNTI (Cell Radio Network Temporary Identifier) variable; and
setting INVALID_CONFIGURATION to TRUE when the CUC message does not include a C_RNTI (Cell Radio Network Temporary Identifier), and, the CUC message would cause the UE to enter a state that requires the UE to transmit a respond message before entering the state, prior to entering the state.
7. The method of claim 6 comprising transmitting a cell update message subsequent to setting the INVALID_CONFIGURATION to TRUE.
8. The method of claim 7 wherein cell update message includes a field indicating that the cause for the cell update message is cell reselection.
9. The method of claim 6 comprising returning to the idle state subsequent to setting the INVALID_CONFIGURATION to TRUE.
10. The method of claim 6 comprising acting on the cell update confirm message without transmitting a response.