SYSTEM, DEVICE, AND METHOD FOR CONFIGURING DUAL DRX CYCLES
A device includes circuitry configured to receive discontinuous reception (DRX) configuration parameters for at least one cell. The circuitry is also configured to determine that the at least one cell is in an ON state or an OFF state. A device-specific DRX cycle or a common DRX cycle is activated corresponding to the DRX configuration parameters based on the at least cell being in the ON state or the OFF state.
1 . A device comprising:
circuitry configured to
receive discontinuous reception (DRX) configuration parameters for at least one cell;
determine that the at least one cell is in an ON state or an OFF state; and
activate a device-specific DRX cycle or a common DRX cycle corresponding to the DRX configuration parameters based on the at least cell being in the ON state or the OFF state.
2 . The device of claim 1 , wherein
the at least one cell includes at least one small cell operating within a coverage area of a macro cell.
3 . The device of claim 1 , wherein
the circuitry is configured to receive the DRX configuration parameters via broadcast signals from an E-UTRAN Node B (eNB).
4 . The device of claim 1 , wherein
the circuitry is configured to activate the device-specific DRX cycle when the at least one cell is in the ON state.
5 . The device of claim 4 , wherein
the device-specific DRX cycle has an ON duration that does not overlap with the ON durations of DRX cycles for one or more other devices.
6 . The device of claim 4 , wherein
the circuitry is configured to activate the device-specific DRX cycle when a common reference signal (CRS) is absent from a discovery burst signal for the at least one cell.
7 . The device of claim 4 , wherein
the circuitry is configured to activate the device-specific DRX cycle based on a previously suspended device-specific DRX cycle.
8 . The device of claim 4 , wherein
the circuitry is further configured to output channel state indication (CSI) reports after receiving a device-specific DRX activation command from the eNB.
9 . The device of claim 4 , wherein
the circuitry is configured to activate the device-specific DRX cycle when a predetermined amount of time has passed without an occurrence of a data transmission.
10 . The device of claim 1 , wherein
the circuitry is configured to activate the common DRX cycle when the serving cell is in the OFF state.
11 . The device of claim 10 , wherein
the circuitry is further configured to receive the configuration parameters for the common DRX cycle having an ON duration that corresponds to the ON durations of DRX cycles for one or more other devices.
12 . The device of claim 10 , wherein
the common DRX cycle has an ON duration that corresponds to an ON duration of a discontinuous transmission (DTX) cycle for the at least one cell.
13 . The device of claim 11 , wherein
the common DRX cycle has a periodicity that corresponds to an integer multiple of a periodicity for the DTX cycle of the at least one cell.
14 . The device of claim 10 , wherein
a periodicity of the common DRX cycle corresponds to a periodicity with which discovery burst signals are sent from the at least one cell.
15 . The device of claim 10 , wherein
the circuitry is further configured to activate the common DRX cycle based on a medium access control (MAC) command received from an E-UTRAN Node B (eNB).
16 . The device of claim 10 , wherein
the circuitry is configured to activate the common DRX cycle when a common reference signal (CRS) is present in a discovery burst signal for the at least one cell.
17 . The device of claim 10 , wherein
the circuitry is configured to cease output of channel state information (CSI) reports after receiving a common DRX activation command from an E-UTRAN Node B (eNB).
18 . The device of claim 1 , wherein
the circuitry is configured to activate the device-specific DRX cycle or the common DRX cycle based on a DRX radio network temporary identifier (RNTI) for the at least one cell.
19 . A method comprising:
receiving, from a wireless network, a configuration for a device-specific discontinuous reception cycle and a configuration for a common discontinuous reception cycle; and
operating according to the device-specific discontinuous reception cycle or the common discontinuous reception cycle in response to signaling received from the wireless network.
20 . A user equipment (UE) comprising:
circuitry configured to
receive, from a wireless network, a configuration for a UE-specific discontinuous reception (DRX) cycle and a configuration for a common DRX cycle; and
operate according to the UE-specific DRX cycle or the common DRX cycle in response to signaling received from the wireless network.