Back to results
US 2015/0312856 A1Published application
System and Method for Uplink Timing Synchronization in Conjunction with Discontinuous Reception
AssigneeBlackBerry Limited
InventorsJames Earl Womack, Zhijun Cai, Yi Yu
Life of this patent
Estimating the term…
Abstract
A system and method are disclosed or providing uplink timing synchronization during DRX operation in a wireless communication system.
Claims33
1-21. (canceled)
A method in a user equipment comprising:
- controlling a receiver to monitor a control channel during a discontinuous reception (DRX) active time;
- stopping from transmitting an uplink sounding reference signal (SRS) responsive to said DRX active time ending;
- and
- maintaining an SRS resource configuration for the user equipment, wherein the SRS resource configuration is associated with a time-frequency resource;
- and
- restarting transmission of the SRS responsive to said DRX active time restarting.
3 more elements
A user equipment (UE) comprising:
- a receiver, the receiver configured to monitor a control channel during a discontinuous reception (DRX) active time;
- and
- a controller, the controller configured to:
- stop transmission of an uplink sounding reference signal (SRS) responsive to said DRX active time ending, and
- maintain an SRS resource configuration for the user equipment, wherein the SRS resource configuration is associated with a time-frequency resource;
- and
- restart transmission of the SRS response to said DRX active time restarting.
4 more elements
A network access equipment comprising a processor configured to:
- send control information to a user equipment comprising a receiver, the control information operable when executed to configure the user equipment to control the receiver to have discontinuous reception (DRX) active time;
- send control information to the user equipment to configure the user equipment to determine uplink sounding reference signal (SRS) sub-frames based on an SRS repetition period;
- stop from receiving an uplink sounding reference signal (SRS) from the user equipment responsive to said DRX active time ending;
- and
- maintain an SRS resource configuration for the user equipment, wherein the SRS resource configuration is associated with a time-frequency resource.
- restart receiving of SRS responsive to said DRX active time restarting.
3 more elements
A non-transitory machine-readable medium with a set of instructions stored thereon, which when executed, cause a processor to perform operations comprising:
- controlling a receiver to monitor a control channel during a discontinuous reception (DRX) active time;
- stopping from transmitting an uplink sounding reference signal (SRS) responsive to said DRX active time ending;
- maintaining an SRS resource configuration for a user equipment when not in said DRX active time, wherein the SRS resource configuration is associated with a time-frequency resource;
- and
- restarting transmission of the SRS responsive to said DRX active time restarting.
2 more elements
A method performed in a network access equipment comprising:
- sending control information to a user equipment comprising a receiver, the control information operable when executed to configure the user equipment to control the receiver to have discontinuous reception (DRX) active time;
- sending control information to the user equipment to configure the user equipment to determine uplink sounding reference signal (SRS) sub-frames based on an SRS repetition period;
- stopping from receiving an uplink sounding reference signal (SRS) from the user equipment responsive to said DRX active time ending;
- maintaining an SRS resource configuration for the user equipment, wherein the SRS resource configuration is associated with a time-frequency resource;
- and
- restart receiving of SRS responsive to said DRX active time restarting.
3 more elements
Dependencies are inferred from the claim text.