| 摘要 |
An area event handler informs when a target mobile enters or leaves a network covering a pre-defined target area, and re-aims an original area event request. When the event occurs, the mobile sends a location report to an initiator of the request. A PLMN list with estimated geographic coverage areas is stored in a Home GMLC, and sent to each relevant mobile. When a mobile enters new network coverage, it uses this list for network access selection. When the Home GMLC discovers that the currently visited PLMN does not serve the original target area, it modifies the area event to the that mobile, so that the Home GMLC will be notified when the target mobile once again enters a PLMN that serves the original target area. Then, after being so notified, the Home GMLC re-sends the original area event location service request to the target mobile. |
