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 method in a mobile telecommunications user equipment (UE), the method comprising:
receiving a Cell Update Confirm (CUC) message at the UE;
when the CUC message excludes a value for a cell identifier, the UE has no stored value for the cell identifier and the CUC message would cause the UE to enter a state which requires the UE to respond to the message before entering the state, carrying out at least one further operation instead of sending a response message indicating successful processing of the CUC message.
2. A method according to claim 1 wherein the further operation comprises:
setting INVALID_CONFIGURATION to TRUE.
3. A method according to claim 2 wherein the further operation further comprises:
the UE sending a cell update message to a network.
4. A method according to claim 2 wherein the further operation further comprises:
returning the UE to an idle state.
5. A method according to claim 1 wherein the further operation comprises:
sending a new cell update message including a field that indicates that the cause for the cell update message is cell reselection.
6. A method according to claim 1 wherein the further operation comprises:
acting on the CUC message without transmitting a response to the network.
7. A method according to claim 1 wherein the further operation comprises:
ignoring the CUC message.
8. A method according to any preceding claim wherein the cell identifier is C_RNTI and the value of the cell identifier is C-RNTI.
9. A non-transitory computer readable medium configured to carry out the operation of the method as claimed in claim 1 .
10. A mobile telecommunications user equipment (UE) comprising:
the UE being arranged to receive a Cell Update Confirm (CUC) message; and
when the CUC message excludes a value for a cell identifier, the UE has no stored value for the cell identifier, and the CUC message would cause the UE to enter a state which requires the UE to respond to the message before entering the state, the UE being arranged to carry out at least one further operation instead of sending a response message indicating successful processing of the CUC message.
11. A UE according to claim 10 wherein the UE is further arranged to:
set INVALID_CONFIGURATION to TRUE.
12. A UE according to claim 11 wherein the UE is further arranged to:
send a cell update message to a network.
13. A UE according to claim 10 wherein the UE is further arranged to:
return to an idle state.
14. A UE according to claim 10 wherein the UE is further arranged to:
send a new cell update message including a field that indicates that the cause for the cell update message is cell reselection.
15. A UE according to claim 10 wherein the UE is further arranged to:
act on the CUC message without transmitting a response to the network.
16. A UE according to claim 10 wherein the UE is further arranged to:
ignore the CUC message.
17. A mobile telecommunication device incorporating a UE according to claim 10 .