Methods, network node and wireless device for supporting positioning of the wireless device
Methods, network node ( 200 ) and wireless device ( 202 ) for supporting positioning of the wireless device in a wireless network. The network node requests ( 2:4 ) the wireless device to provide a positioning related report when a mobility criterion is fulfilled, which criterion may be selected ( 2:3 ) based on sensor capabilities of the device. The wireless device monitors ( 2:5 ) sensor measurements and evaluates the mobility criterion. When the mobility criterion is fulfilled the wireless device provides ( 2:6 ) the positioning related report to the network node which then obtains ( 2:7 ) the position or mobility status of the wireless device based on the positioning related report which may contain information related to said mobility status and/or sensor measurements made in the device.
1. A method performed by a wireless device in a wireless network, the method comprising:
sending sensor capabilities to a network node in response to receiving a request for sensor capabilities of the wireless device;
receiving a mobility criterion selected by the network node based on the sensor capabilities of the wireless device, the criterion comprising one or more thresholds;
receiving a request from the network node to provide a positioning related report upon the selected mobility criterion being fulfilled;
comparing one or more sensor measurements performed by the one or more sensors of the wireless device, against the one or more thresholds;
determining, based on the comparison, whether the mobility criterion has been fulfilled; and
providing the positioning-related report to the network node upon the mobility criterion being fulfilled.
2. The method according to claim 1 , wherein the mobility criterion is dependent on a mobility behaviour of the wireless device so that the positioning-related report is required when the wireless device detects a movement or changed position.
3. The method according to claim 1 , wherein the capabilities are related to sampling frequency.
4. The method according to claim 1 , wherein the positioning-related report comprises a mobility status of the wireless device and/or measurements performed by the wireless device.
5. The method according to claim 1 , wherein the positioning-related report comprises an estimated position computed by the wireless device.
6. The method according to claim 1 , wherein the mobility criterion comprises one or more thresholds related to any of: size of detected movement, variance and/or average of sensor measurements performed over a number of time windows, duration since a previous positioning-related report, and the number of previous positioning-related reports during a certain time period.
7. The method according to claim 6 , wherein said sensor measurements are related to any of: orientation, magnetic intensity, acceleration and displacement.
8. A wireless device arranged to supporting positioning of the wireless device in a wireless network, wherein the wireless device comprises processing circuitry configured to:
send sensor capabilities to a network node, in response to receiving a request for sensor capabilities of the wireless device;
receive a mobility criterion selected by the network node based on the sensor capabilities of the wireless device, the criterion comprising one or more thresholds;
receive a request from the network node to provide a positioning related report upon the selected mobility criterion being fulfilled;
compare one or more sensor measurements performed by the one or more sensors of the wireless device, against the one or more thresholds;
determine, based on the comparison, whether the mobility criterion has been fulfilled; and
provide the positioning-related report to the network node upon the mobility criterion being fulfilled.
9. The wireless device according to claim 8 , wherein the mobility criterion is dependent on a mobility behaviour of the wireless device so that the positioning-related report is required when the wireless device detects a movement or changed position.
10. The wireless device according to claim 8 , wherein the sensor capabilities are related to at least one of: sensor accuracy and sampling frequency.
11. The wireless device according to claim 8 , wherein the positioning-related report comprises a mobility status of the wireless device and/or measurements performed by the wireless device.
12. The wireless device according to claim 8 , wherein the positioning-related report comprises an estimated position computed by the wireless device.
13. The wireless device according to claim 8 , wherein the mobility criterion comprises one or more thresholds related to any of: size of detected movement, variance and/or average of sensor measurements performed over a number of time windows, duration since a previous positioning-related report, and the number of previous positioning-related reports during a certain time period.
14. The wireless device according to claim 13 , wherein said sensor measurements are related to any of: orientation, magnetic intensity, acceleration and displacement.
15. The method according to claim 1 , wherein the capabilities are related to sensor accuracy.