Abstract: Methods and apparatuses that support multiple positioning protocol versions within wireless communication networks are disclosed. In a particular embodiment, a method includes determining, at a first device, a first set of versions of a positioning protocol supported by the first device. An indication signal is transmitted from the first device to a second device. The indication signal includes a set of position determination data messages (PDDMs). Each particular PPDM of the set of PDDMs has a corresponding particular version of the first set of versions.

Abstract: For a call flow to perform position determination, a network sends to a user equipment (UE) an indication (e.g., a request for permission) to perform a position fix for the UE. The UE responds by sending to the network an acknowledgment (e.g., a grant of permission) to perform the position fix. The UE selectively sends a position estimate for itself to the network, typically along with the acknowledgment. The network may initiate location processing if (1) a location estimate is not received from the UE or (2) a location estimate is received from the UE but the network decides not to use this location estimate. In this case, the network and the UE perform location processing to obtain a position fix for the UE. However, if a location estimate is received from the UE and the network decides to use the location estimate, then the location processing is bypassed or short circuited.