Methods and systems for segmentation of positioning protocol messages

A method for limiting a size of Long Term Evolution (LTE) Positioning Protocol (LPP) messages in a location session, the method comprising:

• receiving, from a first device at a second device, a first LPP message including an indication that the first device is capable of receiving segmented LPP messages;
• after the receiving of the first LPP message, determining that a size of a prospective LPP message will exceed a certain threshold;
• and
• sending, from the second device to the first device, a plurality of LPP message segments comprising information corresponding to the prospective LPP message, the plurality of LPP message segments comprising one or more non-final LPP message segments and a final LPP message segment wherein:
• each non-final LPP message segment of the one or more non-final LPP message segments includes a segmentation information field that is set to a first value to indicate that the respective non-final LPP message segment is non-final, and that one or more additional LPP message segments will be transferred and
• the final LPP message segment includes the segmentation information field that is set to a second value to indicate that the final LPP message segment is final
• and wherein each LPP message segment includes an end transaction field that is set to true to indicate the end of an LPP transaction that includes the plurality of the LPP message segments and wherein the respective value of segmentation information field is set independently of the value of the end transaction field.

A device for receiving segmented Long Term Evolution (LTE) Positioning Protocol (LPP) messages, the device comprising:

• a communication interface;
• a memory;
• and
• a processing unit communicatively coupled with the communication interface and the memory and configured to cause the device to:
• send, via the communication interface to a transmitting device, a first LPP message including an indication that the device is capable of receiving segmented LPP messages;
• and
• after the sending of the first LPP message, receive, via the communication interface from the transmitting device, a plurality of LPP message segments comprising one or more non-final LPP message segments and a final LPP message segment, wherein:
• each non-final LPP message segment of the one or more non-final LPP message segments includes a segmentation information field that is set to a first value to indicate that the respective non-final LPP message segment is non-final, and that one or more additional LPP message segments will be transferred and
• the final LPP message segment includes the segmentation information field that is set to a second value to indicate that the final LPP message segment is final
• and wherein each LPP message segment includes an end transaction field
• that is set to true to indicate the end of an LPP transaction that includes the plurality of the LPP message segments and wherein the respective value of segmentation information field is set independently of the value of the end transaction field.

A device for transmitting segmented Long Term Evolution (LTE) Positioning Protocol (LPP) messages the device comprising:

• a communication interface;
• a memory;
• and
• a processing unit communicatively coupled with the communication interface and the memory and configured to cause the device to:
• receive, via the communication interface from a receiving device, a first LPP message including an indication that the receiving device is capable of receiving segmented LPP messages;
• after the receiving of the first LPP message, determine that a size of a prospective LPP message will exceed a certain threshold;
• and
• send, via the communication interface to the receiving device, a plurality of LPP message segments comprising information corresponding to the prospective LPP message, the plurality of LPP message segments comprising one or more non-final LPP message segments and a final LPP message segment wherein:
• each non-final LPP message segment of the one or more non-final LPP message segments includes a segmentation information field that is set to a first value to indicate that the respective non-final LPP message segment is non- final, and that one or more additional LPP message segments will be transferred and
• the final LPP message segment includes the segmentation information field that is set to a second value to indicate that the final LPP message segment is final
• and wherein each LPP message segment includes an end transaction field that is set to true to indicate the end of an LPP transaction that includes the plurality of the LPP message segments and wherein the respective value of segmentation information field is set independently of the value of the end transaction field.