Positioning time gap scheduling for non-terrestrial communication
Various example embodiments relate to provision of a positioning time gap in a paging procedure. An apparatus may obtain positioning capability information of a device. The positioning capability information may comprise an indication of a first time period for determining a position of the device with first initial positioning data and an indication of a second time period for determining the position of the device with second initial positioning data. A positioning time gap may be determined based on the positioning capability information of the device. The apparatus may transmit a first signal, but refrain from transmitting a second signal for at least a duration of the positioning time gap from the first signal. Apparatuses, methods, and computer programs are disclosed.
1. An apparatus, comprising:
at least one processor;
and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
obtain positioning capability information of a device, wherein the positioning capability information comprises an indication of a first time period for determining a position of the device with first initial positioning data and an indication of a second time period for determining the position of the device with second initial positioning data, wherein the first initial positioning data comprises at least almanac data of a plurality of satellites and not ephemeris data, and wherein the second initial positioning data comprises at least the almanac data of the plurality of satellites and the ephemeris data of at least one of the plurality of satellites;
determine a positioning time gap based on the positioning capability information of the device, and wherein determining the position time gap further comprises:
when a previous location update of the device has been received within an update interval of the almanac data and not within an update interval of the ephemeris data, using the first time period as basis for determining the positioning time gap; and
when the previous location update of the device has been received within the update interval of the ephemeris data determine to use the second time period as basis for determining the positioning time gap;
transmit a first signal to the device;
refrain from transmitting a second signal to the device for at least a duration of the positioning time gap from the first signal, wherein the first signal comprises a paging message and the second signal comprises a second paging message; and
determine that the device is expected to perform cell reselection to another cell before an intended transmission time of the second paging message; and
adjust the positioning time gap based on a cell reselection time.
2. The apparatus according to claim 1 , wherein the apparatus is further caused to: determine not to transmit the second signal, in response to receiving a random access signal from the device.
3. The apparatus according to claim 2 , wherein the first signal comprises a wake-up signal and the second signal comprises a paging message.
4. The apparatus according to claim 3 , wherein the apparatus is further caused to: scale the positioning time gap by a scaling factor associated with a previous location of the device; and transmit an indication of the scaling factor to the device.