Optimizing location services performance by combining user plane and control plane architectures
View Patent ↗A system and method is disclosed that determines the position of a mobile device using information obtained by employing a first location determination protocol (or modality) to control the efficient or advantageous invocation of a second location determination protocol (or modality). The system utilizes information readily available from the Control plane along with request parameters and device capabilities to determine whether to invoke a CoPL or SUPL session.
1. A method for position determination in a wireless communications network having a dual plane capable Gateway Mobile Location Center (GMLC) and including a user device, comprising steps of:
(a) receiving a request for location information;
(b) invoking one of at least a control plane and a user plane based on at least one of the group consisting of requesting application, known user device capabilities and network capabilities.
2. The method of claim 1 , further comprising
(c) querying a Home Location Register (HLR) for information;
(d) receiving information regarding network capabilities; and,
(e) invoking a location determination session based on at least the received information.
3. The method of claim 1 , wherein the step of invoking a location determination session further comprises comparing the network capabilities against a request parameter received with the request for location information and invoking a location determination session based at least on the comparison.
4. The method of claim 1 further comprising:
establishing a control plane location session;
extracting network-based measurements from the control plane data;
comparing the network-based measurements with the request parameter; and,
selectively invoking a user plane location determination session based on the comparison.
5. The method according to claim 3 , wherein the request parameter is location accuracy.
6. The method according to claim 3 , wherein the request parameter of the request is requested speed for the location.
7. The method according to claim 4 , wherein the network based measurement is timing advance (TA).
8. The method according to claim 4 , wherein the network based measurement is network measurement report (NMR) data.
9. The method according to claim 1 , wherein the step of invoking a location determination session is based at least upon the duration of a control plane location session and a user plane location session.
10. The method according to claim 4 , comprising the step of determining the location based on based on the network based measurements.
11. The method according to claim 3 , wherein the parameter of the request is estimated speed for the location.
12. A method for selectively invoking a position determination session in a wireless communications network including a user device, comprising steps of:
(a) receiving a request for location information;
(b) accessing control plane position (CoPL) data;
(c) extracting network-based measurements from the control plane position data;
(d) determining a user plane invocation parameter based on network access or device information associated with a user plane; and
(e) invoking a user plane position determination session, based on the user plane invocation parameter and the network-based measurements.
13. The method according to claim 12 , wherein the network-based measurements are a function of the Quality of Position (QoP) of the CoPL.
14. The method according to claim 13 , wherein the network based measurement is timing advance (TA).
15. The method according to claim 13 , wherein the network based measurement is network measurement report (NMR) data.
16. The method according to claim 13 , wherein network access indicates whether control plane Global Positioning System (GPS) is supported.
17. The method according to claim 13 , comprising the step of receiving device information from the control plane.
18. The method according to claim 17 wherein device information is a function of control plane Global Positioning System (GPS) and Location Services (LCS) capabilities of the device.
19. The method according claim 13 wherein network access is a function of Location Services (LCS) requester.
20. The method according to claim 13 wherein network access is predetermined by serving area.
21. A method for multi-plane position determination in a wireless communications network including a user device, comprising steps of:
(a) receiving a request for location information;
(b) accessing control plane position data;
(c) extracting network-based measurements from the control plane position data;
(d) accessing user plane position data;
(e) extracting device-based measurements from the user plane position data;
(f) returning a multi-plane position measurement based on at least the network-based measurements and the device-based measurements.
22. The method of claim 21 , wherein the device-based measurements are Global Positioning System (GPS) measurements.
23. The method of claim 21 , wherein the network based measurements are Angle of Arrival(AoA), Time Difference of Arrival (TDOA) or Time of Arrival (TOA) measurements from a plurality of Location measurement unit.
24. The method of claim 21 , wherein the device-based measurements are of the network.
25. A method for selectively invoking a position determination session in a visiting communications network, comprising steps of:
(a) receiving a request for location information;
(b) sending a request message to a Home Location Register (HLR);
(c) receiving information regarding the visiting network; and,
(d) invoking a location determination session based on the information,
wherein the location determination session is one of a control plane location (CoPL) and a user plane location (UPL) determination session.
26. The method of claim 25 , wherein the information is a serving area identifier.
27. The method of claim 26 , further including using the serving area identifier in conjunction with a database to invoke the location determination session.
28. The method of claim 26 , wherein the serving area identifier is determined by the network operator.
29. The method of claim 25 , wherein the information is routing information.
30. The method of claim 29 , wherein the routing information indicated support for CoPL.