| 摘要 |
A COMMUNICATION SYSTEM COMMUNICATES POSITIONS REQUEST AND INFORMATION OVER A COMMUNICATION CHANNEL THAT IS USED FOR COMMUNICATING ROAMING DATA BETWEEN MOBILE STATIONS. OVER THE COMMUNICATION CHANNEL, A FIRST LOCAL PLMN TRANSMITS A POSITION REQUEST TO A SECOND REMOTE PLMN CONVERING A REMOTE SERVICE AREA WITHIN WHICH A ROAMING MOBILE STATION IS POSITIONED. IN RESPONSE TO THE POSITION REQUEST, THE SECOND PLMN TRANSMITS POSITIONS INFORMATION RELATED TO THE ROAMING MOBILE STATION TO THE FIRST PLMN, PREFERABLY, OVER THE SAME COMMUNICATION CHANNEL.FIGURE 1
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