Apparatus and method of uplink data during cell update in universal mobile telecommunications system user equipment
View Patent ↗The details of an apparatus and method of uplink data during cell update in universal mobile telecommunications system user equipment are disclosed herein. According to one aspect of the present application, there is provided a user equipment to send uplink data to a UTRAN during a CELL UPDATE. The apparatus has an uplink data saving RRC with an uplink data store to save the uplink data while the CELL UPDATE procedure is ongoing, and a state machine having a Cell FACH state and/or a Cell DCH state. The uplink data saving RRC sends the saved uplink data to the UTRAN via an UPLINK DIRECT TRANSFER when the CELL UPDATE procedure has completed and the state machine enters either Cell FACH or Cell DCH state. According to another aspect of the present application, there is provided a method of sending uplink data to a UTRAN during a CELL UPDATE procedure. The method includes the steps of saving the uplink data while the CELL UPDATE procedure is ongoing and sending the saved uplink data to the UTRAN via an UPLINK DIRECT TRANSFER when the CELL UPDATE procedure is completed and the user equipment is in one of CELL FACH and CELL DCH state.
1. A user equipment device comprising:
means for sending uplink data receivable by a UTRAN during a CELL UPDATE;
means for saving uplinik data associated with an RRC comprising saving the uplinik data while the CELL UPDATE procedure is ongoing;
means for detecting a current state and changing state comprising at least one of a Cell FACH state and a Cell DCH state;
means for the RRC to send, configured to be receivable by a UTRAN from the associated saved uplinik data, saved uplinik data configured as an UPLINK DIRECT TRANSFER upon the condition that the CELL UPDATE procedure has completed and the current state comprises one of Cell FACH and Cell DCH.
2. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Uplink Data transmission.
3. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Paging.
4. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Re-entering service area.
5. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Radio Link failure.
6. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by RLC unrecoverable error.
7. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Cell reselection.
8. The user equipment as recited in claim 1 , wherein the CELL UPDATE procedure is caused to become ongoing by Periodical cell update.
9. The user equipment as recited in claim 1 , further comprising means for the CELL UPDATE to send a notification receivable by the UTRAN using a CELL UPDATE message with a Cause of ‘uplinik data transmission’.
10. The user equipment as recited in claim 1 , further comprising means to use an Idle state whereat the user equipment waits for a ‘Signaling Connection establishment request.
11. The user equipment as recited in claim 10 , further comprising means to use a Connected state containing said at least one of Cell FACH and Cell DCH states, whereat the user equipment remains upon reception of an RRC CONNECTION SETUP, and whereat the state transitions to said Idle state upon one of the reception of an RRC CONNECTION RELEASE, an error at the user equipment, and other events which cause a transition to said Idle state.
12. The user equipment as recited in claim 11 , further comprising means for a Cell PCH state.
13. The user equipment as recited in claim 11 , further comprising means for a URA PCH state.
14. The user equipment as recited in claim 1 , wherein a radio bearer RB 3 is available when the attempt to send the data is made.
15. The user equipment as recited in claim 1 , wherein a radio bearer RB 4 is available when the attempt to send the data is made.