Method for determining location of UE by using AGPS information

A method for determining a location of a User Equipment (UE) by means of Assisted Global Positioning System (AGPS) information, the method comprising the steps of:

• generating, by an SUPL Location Center (SLC), a pseudo UE IDentification (ID) that is substitute for an ID of the UE when a request for location information of the UE is received, the pseudo UE ID being used only for communication between the SLC and a SUPL Positioning Center (SPC), wherein the pseudo UE ID is not included in transmissions to the UE;
• transmitting, by the SLC, an AGPS information request including the pseudo ID of the UE, to the SPC, and receiving the AGPS information;
• transferring, by the SLC, the received AGPS information to the UE, and receiving location values of the UE, the values being calculated by the UE;
• and
• providing, by the SLC, the location information of the UE by means of the received location values of the UE.

A method for determining a location of a User Equipment (UE) by means of Assisted Global Positioning System (AGPS) information, the method comprising the steps of:

• generating, by an SUPL Location Center (SLC), a pseudo UE IDentification (ID) that is a substitute for an ID of the UE when a request for location information of the UE is received, the pseudo UE ID being used only for communication between the SLC and a SUPL Positioning Center (SPC), wherein the pseudo UE ID is not included in transmissions to the UE;
• requesting, by the SLC, AGPS information for the UE, the location information of which has been requested, to the SPC by means of an SLC ID for identifying the SLC and the pseudo UE ID, and receiving the AGPS information;
• transferring, by the SLC, the received AGPS information to the UE, and receiving Global Positioning System (GPS) signal measurement values using the AGPS information from the UE;
• requesting, by the SLC, a location calculation of the UE for the GPS signal measurement values to the SPC by means of the SLC ID and the pseudo UE ID, and receiving calculated location values;
• and
• providing, by the SLC, the location information of the UE by means of the received location values of the UE.

A method for determining a location of a User Equipment (UE) by means of Assisted Global Positioning System (AGPS) information, the method comprising the steps of:

• generating, by an SUPL Location Center (SLC), a pseudo UE IDentification (ID) that is a substitute for an ID of the UE when a request for location information of the UE is received, the pseudo UE ID being used only for communication between the SLC and a SUPL Positioning Center (SPC), wherein the pseudo UE ID is not included in transmissions to the UE;
• requesting, by the SLC, AGPS information for the UE, the location information of which has been requested, to the SPC by means of an SLC ID for identifying the SLC and the pseudo UE ID, and receiving the AGPS information;
• transferring, by the SLC, the received AGPS information to the UE, and receiving location values of the UE calculated using the AGPS information from the UE;
• and
• providing, by the SLC, the location information of the UE by means of the received location values of the UE.

A method for providing location information of a User Equipment (UE) in a communication system, which includes the UE, a Secure User Plane Location (SUPL) Location Center (SLC) and a SUPL Positioning Center (SPC), so as to provide the location information of the UE, the method comprising the steps of:

• receiving, by the SLC, a request for location information of a UE from a requester;
• notifying, by the SLC, the UE that the location information has been requested;
• receiving, by the SLC, information for a determination of the location of the UE from the UE;
• requesting, by the SLC, the SPC to generate location assistance information of the UE;
• receiving, by the SLC, the location assistance information from the SPC;
• transmitting, by the SLC, the location assistance information to the UE;
• transmitting, to the SPC, by the SLC, a location value generated by using the location assistance information in the UE;
• receiving, by the SLC, current location information of the UE by using the location value from the SPC;
• and
• transmitting, by the SLC, the location information to the requester,
• wherein the information for determination of the location comprises an IDentification (ID) of the UE, an ID of a cell in which the UE is located, and information about a positioning capability of the UE, and
• wherein the step of requesting, by the SLC, the SPC to generate location assistance information of the UE comprises:
• generating, by the SLC, a pseudo UE ID corresponding to the ID of the UE;
• and
• requesting, by the SLC, the SPC to transmit the location assistance information to the SLC, by using the pseudo UE ID instead of the ID of the UE.

A method for providing location information of a User Equipment (UE) in a communication system, which includes the UE, a Secure User Plane Location (SUPL) Location Center (SLC), and a SUPL Positioning Center (SPC), so as to provide the location information of the UE, the method comprising the steps of:

• receiving, by the UE, from the SLC, a notification informing the UE of a request for location information of the UE;
• transmitting, by the UE, to the SLC, UE information including a UE IDentification (ID) which is necessary for generating location assistance information;
• receiving, by the UE, from the SLC, the location assistance information, which is generated by the SPC through use of a pseudo ID that is used only for communication between the SLC and the SPC, wherein the pseudo ID is a substitute for the UE ID;
• measuring, by the UE, a Global Positioning System (GPS) signal used for calculating a current location of the UE by using Assisted-GPS (AGPS) information;
• and
• transmitting, by the UE, the measured GPS information to the SPC through the SLC in order for the SPC to calculate the current location of the UE.

A communication system for providing location information of a User Equipment (UE) in a communication system, which includes the UE, a Secure User Plane Location (SUPL) Location Center (SLC), and a SUPL Positioning Center (SPC), so as to provide the location information of the UE, the communication system comprising:

• the UE for transmitting, to the SLC, a UE information including UE IDentification (ID) that is necessary for generating location assistance information, when the UE receives, from the SLC, a notification informing the UE of a request for location information of the UE;
• the SLC for generating a pseudo ID being used only to communicate between the SLC and the SPC, wherein the pseudo ID is a substitute for the UE ID, and requesting the location assistance information from the SPC by using the pseudo ID;
• and
• the SPC for generating location assistance information by using the pseudo ID when the SPC receives the request of the location assistance information from the SLC, and for transmitting the location assistance information to the UE through the SLC,
• wherein the UE measures a Global Positioning System (GPS) signal by using the location assistance information, and transmits the measured GPS information to the SPC through the SLC, in order for the SPC to calculate a current location information of the UE.