Flexible measurements in unlicensed band
The specification and drawings present a new method, apparatus and software related product (e.g., a computer readable memory) for implementing enhanced and flexible radio aperiodic measurements, e.g., on an unlicensed band in LTE wireless systems and providing effective and timely reporting. A UE may receive from a wireless network an aperiodic measurement request to measure a special measurement object (e.g., a neighbor cell) specified in the aperiodic measurement request, e.g., in an unlicensed band. In response to the aperiodic measurement request, the UE may perform the measurement of the special management object until a further instruction from the wireless network or for a determined period of time. Inter-frequency measurements may be performed during the measurement gap determined from the aperiodic measurement request.
1. A method comprising:
receiving, by a user equipment, from a wireless network an aperiodic measurement request to measure a special measurement object in an unlicensed band specified in the aperiodic measurement request;
measuring the special measurement object in response to the aperiodic measurement request for a determined period of time; and
configuring one or more measuring time intervals for the user equipment during respective one or more measurement gaps for inter-frequency measurements based on the aperiodic measurement request, the one or more measuring time intervals defining the determined period of time,
the method further comprising configuring the user equipment to perform measurements of measurement objects different than the special measurement object in measurement gaps for inter-frequency measurements, and configuring the user equipment to measure the special measurement object in the one or more time intervals specified in the aperiodic measurement request, without the user equipment measuring the special measurement object outside of the one or more time intervals.
2. The method of claim 1 , wherein the aperiodic measurement request comprises information about a measurement gap which includes one or more of:
whether the measurement gap is needed,
a starting point of the measurement gap,
a duration of the measurement gap, and
a repetition rate of the measurement gap.
3. The method of claim 1 , wherein the aperiodic measurement request comprises a number of consecutive sub-frames to perform the measuring.
4. The method of claim 1 , wherein the aperiodic measurement request is an aperiodic trigger measurement request so that the measuring starts immediately after receiving the aperiodic trigger measurement request.
5. The method of claim 1 , wherein the aperiodic measurement request comprises a number of measurement cycles which determines the determined period of time.
6. The method of claim 1 , wherein the aperiodic measurement request comprises an uplink grant for sending a measurement report.
7. The method of claim 1 , wherein the special measurement object comprises one or more neighboring cells.
8. The method of claim 1 , wherein a time to trigger a measurement report is counted by a number of the measurement gaps.
9. The method of claim 1 , wherein a time to trigger period is interrupted by an OFF period of a current serving cell of the user equipment, and a measurement report is automatically triggered and sent with an indication of a value of the time to trigger period when the OFF period of the cell started.
10. The method of claim 1 , wherein a time to trigger period is interrupted by an OFF period of a current serving cell of the user equipment,
where, if a duration of the OFF period is smaller than a predefined value, a measurement report includes measuring results collected before starting the OFF period, and
if a duration of the OFF period is larger than a predefined value, the measurement report excludes measuring results collected before starting the OFF period.
11. An apparatus comprising:
circuitry configured to:
receive from a wireless network an aperiodic measurement request to measure a special measurement object in an unlicensed band_specified in the aperiodic measurement request;
measure the special measurement object in response to the aperiodic measurement request for a determined period of time;
configure one or more measuring time intervals for the user equipment during respective one or more measurement gaps for inter-frequency measurements based on the aperiodic measurement request, the one or more measuring time intervals defining the determined period of time; and
configure the user equipment to perform measurements of measurement objects different than the special measurement object in measurement gaps for inter-frequency measurements, and configure the user equipment to measure the special measurement object in the one or more time intervals specified in the aperiodic measurement request, without the user equipment measuring the special measurement object outside of the one or more time intervals.
12. The apparatus of claim 11 , wherein the aperiodic measurement request comprises information about a measurement gap which includes one or more of:
whether the measurement gap is needed,
a starting point of the measurement gap,
a duration of the measurement gap, and
a repetition rate of the measurement gap.
13. The apparatus of claim 11 , wherein the aperiodic measurement request comprises a number of consecutive sub-frames to perform the measuring.
14. The apparatus of claim 11 , wherein the aperiodic measurement request is an aperiodic trigger measurement request so that the measuring starts immediately after receiving the aperiodic trigger measurement request.
15. The apparatus of claim 11 , wherein the aperiodic measurement request comprises a number of measurement cycles which determines the determined period of time.
16. A non-transitory computer readable memory encoded with a computer program comprising computer readable instructions recorded thereon for executing a method comprising:
receiving, by a user equipment, from a wireless network an aperiodic measurement request to measure a special measurement object in an unlicensed band specified in the aperiodic measurement request;
measuring the special measurement object in response to the aperiodic measurement request for a determined period of time; and
configuring one or more measuring time intervals for the user equipment during respective one or more measurement gaps for inter-frequency measurements based on the aperiodic measurement request, the one or more measuring time intervals defining the determined period of time,
the method further comprising configuring the user equipment to perform measurements of measurement objects different than the special measurement object in measurement gaps for inter-frequency measurements, and configuring the user equipment to measure the special measurement object in the one or more time intervals specified in the aperiodic measurement request, without the user equipment measuring the special measurement object outside of the one or more time intervals.