| 摘要 |
<p>For a call flow to perform position determination, a network ( 100 ) sends to a user equipment (UE) ( 120 ) an indication (e.g., a request for permission) to perform a position fix for the UE ( 120 ). The UE ( 120 ) responds by sending to the network an acknowledgment (e.g., a grant of permission) to perform the position fix. The UE ( 120 ) selectively sends a position estimate for itself to the network ( 100 ), typically along with the acknowledgment. The network ( 100 ) may initiate location processing if (1) a position estimate is not received from the UE ( 120 ) or (2) a position estimate is received from the UE ( 120 ) but the network ( 100 ) decides not to use this position estimate. In this case, the network ( 100 ) and the UE ( 120 ) perform location processing to obtain a position fix for the UE ( 120 ). However, if a position estimate is received from the UE ( 120 ) and the network ( 100 ) decides to use the position estimate, then the location processing is bypassed or short circuited.</p> |
