Control signal management system and method
A user equipment (UE) including a processor configured to transmit control plane data irrespective of on-duration/off-duration status.
1. An enhanced Node B (eNB), comprising:
a processor configured to:
receive control plane data from a user equipment (UE) during an unscheduled on-duration associated with a discontinuous reception (DRX) mode of operation; and
specify a run time of a timer that starts subsequent to the UE transmitting the control plane data during the unscheduled on-duration, the run time defining a period of time for which the UE is to remain awake after the control plane data is transmitted in the unscheduled on-duration, wherein the UE is configured to transition to a scheduled off-duration when the period of time expires,
wherein scheduled on-durations and scheduled off-durations of the UE are not changed by the unscheduled on-duration,
wherein the DRX mode of operation defines a scheduled on-duration followed by a scheduled off-duration.
2. The eNB of claim 1 , wherein the eNB is configured to receive user plane data from the UE only during the scheduled on-durations.
3. The eNB of claim 2 , wherein the user plane data includes application layer data including Voice over Internet Protocol (VoIP) data packets, and data packets containing information related to web browsing, emailing, and other user applications.
4. The eNB of claim 1 , wherein the control plane data includes control signaling including at least one of:
a Layer 1 scheduling request;
a Layer 2 radio resource control (RRC) message; or
a mobility measurement message.
5. The eNB of claim 1 , wherein the timer is a response timer configured to keep the UE awake for a period of time sufficient for the UE to receive a response signal or other control signal from the eNB.
6. The eNB, of claim 1 , wherein a timing alignment timer is configured to promote uplink synchronization between the UE and the eNB, the timing alignment timer further configured to measure a predefined time and promote release of channel resources upon expiration of the timing alignment timer.
7. The eNB of claim 6 , wherein the UE releases the channel resources when the UE does not receive a timing alignment signal from the eNB for the predefined time.
8. A method of receiving control plane data at an enhanced node B (eNB), the method comprising:
receiving control plane data from a user equipment (UE) during an unscheduled on-duration associated with a discontinuous reception (DRX) mode of operation; and
specifying a run time of a timer that starts subsequent to the UE transmitting the control plane data during the unscheduled on-duration, the run time defining a period of time for which the UE is to remain awake after the control plane data is transmitted in the unscheduled on-duration, wherein the UE is configured to transition to a scheduled off-duration when the period of time expires,
wherein scheduled on-durations and scheduled off-durations of the UE are not changed by the unscheduled on-duration,
wherein the DRX mode of operation defines a scheduled on-duration followed by a scheduled off-duration.
9. The method of claim 8 , further comprising receiving user plane data from the UE only during the scheduled on-durations.
10. The method of claim 9 , wherein the user plane data comprises application layer data comprising Voice over Internet Protocol (VoIP) data packets, and data packets containing information related to web browsing, emailing, and other user applications.
11. The method of claim 8 , wherein the control plane data comprises control signaling comprising at least one of:
a Layer 1 scheduling request;
a Layer 2 radio resource control (RRC) message; or
a mobility measurement message.
12. The method of claim 8 , wherein the timer is a response timer configured to keep the UE awake for a period of time sufficient for the UE to receive a response signal or other control signal from the eNB.
13. The method of claim 8 , wherein a timing alignment timer is configured to promote uplink synchronization between the UE and the eNB, the timing alignment timer further configured to measure a predefined time and promote release of channel resources upon expiration of the timing alignment timer.
14. The method of claim 13 , wherein the UE releases the channel resources when the UE does not receive a timing alignment signal from the eNB for the predefined time.
15. A non-transitory computer readable medium storing instructions that when executed by one or more processors cause the one or more processors to implement a method in an enhanced Node B (eNB), the method comprising:
receiving control plane data from a user equipment (UE) during an unscheduled on-duration associated with a discontinuous reception (DRX) mode of operation; and
specifying a run time of a timer that starts subsequent to the UE transmitting the control plane data during the unscheduled on-duration, the run time defining a period of time for which the UE is to remain awake after the control plane data is transmitted in the unscheduled on-duration, wherein the UE is configured to transition to a scheduled off-duration when the period of time expires,
wherein scheduled on-durations and scheduled off-durations of the UE are not changed by the unscheduled on-duration,
wherein the DRX mode of operation defines a scheduled on-duration followed by a scheduled off-duration.
16. The non-transitory computer readable medium of claim 15 , wherein the method further comprises receiving user plane data from the UE only during the scheduled on-durations.
17. The non-transitory computer readable medium of claim 15 , wherein a timing alignment timer is configured to promote uplink synchronization between the UE and the eNB, the timing alignment timer further configured to measure a predefined time and promote release of channel resources upon expiration of the timing alignment timer.
18. The non-transitory computer readable medium of claim 17 , wherein the UE releases the channel resources when the UE does not receive a timing alignment signal from the eNB for the predefined time.