diff -r ae94777fff8f -r 59758314f811 Symbian3/PDK/Source/GUID-3E7FBDE5-B580-4C2D-9815-83E04B7D71E1.dita --- a/Symbian3/PDK/Source/GUID-3E7FBDE5-B580-4C2D-9815-83E04B7D71E1.dita Fri Jun 11 12:39:03 2010 +0100 +++ b/Symbian3/PDK/Source/GUID-3E7FBDE5-B580-4C2D-9815-83E04B7D71E1.dita Fri Jun 11 15:24:34 2010 +0100 @@ -1,76 +1,76 @@ - - - - - -Switching -from Cell ID to Terminal-Assisted PositioningHow to get an assisted GPS terminal-assisted position when the -network positioning preference is SUPL. -

SUPL -(Secure User Plane Location) enables a device to communicate with a SUPL server -over an IP connection. A client application requests a position from the network -using SUPL. To receive the position the client must be able to connect to -the Location subsystem. The client must then select the Network Proxy PSY -(NPP) module as its source. The NPP module must be configured to use the SUPL -PSY.

While the SUPL PSY module can use cell-based positioning, enhanced -cell-based positioning and AGPS terminal-assisted positioning, the SUPL Network -Server may optionally use AGPS terminal-assisted positioning, though this -is not usually advised.

With AGPS terminal-assisted positioning the client -application therefore requests a position from the network using an AGPS Terminal. -The steps below describe the process.

 - -The client must -open a connection to the server by calling RPositionServer::Connect(). - -The client must -then open RPositioner by calling RPositioner::Open() and -specify the UID of the Network Proxy PSY. - -The client application -sends a location request to the Location subsystem by calling RPositioner::NotifyPositionUpdate(). - -The Location subsystem -forwards the location request to the SUPL Protocol module by calling CLbsNetworkProtocolBase::RequestNetworkLocation(). -(In the default configuration SUPL is used for cell-based positioning). - -The SUPL protocol -module communicates with an external SUPL server, which decides to use terminal-assisted -GPS positioning instead of cell-based positioning. - -The SUPL Protocol -Module requests a measurement update from the Location subsystem by calling MLbsNetworkProtocolObserver::ProcessLocationRequest(). - -The Location subsystem -requests a measurement update from the AGPS module by calling CLbsLocationSourceGpsBase::RequestLocationUpdate(). - -The AGPS module -produces a position update by calling MLbsLocationSourceGpsObserver::UpdateLocation(). - -The Location subsystem -forwards the measurement update to the network by calling CLbsNetworkProtocolBase::ProcessLocationUpdate(). - -The measurement -is sent to the SUPL server, which calculates and returns the position. - -The SUPL Protocol -module returns the cell-based position by calling MLbsNetworkProtocolObserver::ProcessLocationUpdate(). - -The Location subsystem -completes the client request. - - -SUPL has enabled the -client application to receive the AGPS terminal-assisted position from the -network. - -SUPL Cell -Based Positioning Request -Control Plane -Cell Position Attempt Fallback to SUPL + + + + + +Switching +from Cell ID to Terminal-Assisted PositioningHow to get an assisted GPS terminal-assisted position when the +network positioning preference is SUPL. +

SUPL +(Secure User Plane Location) enables a device to communicate with a SUPL server +over an IP connection. A client application requests a position from the network +using SUPL. To receive the position the client must be able to connect to +the Location subsystem. The client must then select the Network Proxy PSY +(NPP) module as its source. The NPP module must be configured to use the SUPL +PSY.

While the SUPL PSY module can use cell-based positioning, enhanced +cell-based positioning and AGPS terminal-assisted positioning, the SUPL Network +Server may optionally use AGPS terminal-assisted positioning, though this +is not usually advised.

With AGPS terminal-assisted positioning the client +application therefore requests a position from the network using an AGPS Terminal. +The steps below describe the process.

 + +The client must +open a connection to the server by calling RPositionServer::Connect(). + +The client must +then open RPositioner by calling RPositioner::Open() and +specify the UID of the Network Proxy PSY. + +The client application +sends a location request to the Location subsystem by calling RPositioner::NotifyPositionUpdate(). + +The Location subsystem +forwards the location request to the SUPL Protocol module by calling CLbsNetworkProtocolBase::RequestNetworkLocation(). +(In the default configuration SUPL is used for cell-based positioning). + +The SUPL protocol +module communicates with an external SUPL server, which decides to use terminal-assisted +GPS positioning instead of cell-based positioning. + +The SUPL Protocol +Module requests a measurement update from the Location subsystem by calling MLbsNetworkProtocolObserver::ProcessLocationRequest(). + +The Location subsystem +requests a measurement update from the AGPS module by calling CLbsLocationSourceGpsBase::RequestLocationUpdate(). + +The AGPS module +produces a position update by calling MLbsLocationSourceGpsObserver::UpdateLocation(). + +The Location subsystem +forwards the measurement update to the network by calling CLbsNetworkProtocolBase::ProcessLocationUpdate(). + +The measurement +is sent to the SUPL server, which calculates and returns the position. + +The SUPL Protocol +module returns the cell-based position by calling MLbsNetworkProtocolObserver::ProcessLocationUpdate(). + +The Location subsystem +completes the client request. + + +SUPL has enabled the +client application to receive the AGPS terminal-assisted position from the +network. + +SUPL Cell +Based Positioning Request +Control Plane +Cell Position Attempt Fallback to SUPL \ No newline at end of file