Communication system that communicates position information of roaming mobile stations
First Claim
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1. A communication system that supports roaming among at least two PLMNS, comprising:
- a first Mobile Positioning Center (MPC) located in a first PLMN that transmits a position request over a communication channel requesting position information of a roaming mobile station; and
a second MPC located in a second PLMN that in response to receiving the position request over the communication channel initiates a positioning procedure for determining the position of the roaming mobile station.
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Abstract
A communication system communicates position 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 covering a remote service area within which a roaming mobile station is positioned. In response to the position request, the second PLMN transmits position information related to the roaming mobile station to the first PLMN, preferably, over the same communication channel.
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Citations
27 Claims
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1. A communication system that supports roaming among at least two PLMNS, comprising:
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a first Mobile Positioning Center (MPC) located in a first PLMN that transmits a position request over a communication channel requesting position information of a roaming mobile station; and
a second MPC located in a second PLMN that in response to receiving the position request over the communication channel initiates a positioning procedure for determining the position of the roaming mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17, 18, 19)
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9. A cellular positioning system for a communication network that supports roaming among a first PLMN and a second PLMN, comprising:
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a first mobile positioning center (MPC) located in the first PLMN that transmits a position request requesting position information of a roaming mobile station in the second PLMN; and
a second MPC located in the second PLMN that in response to receiving the position request initiates a positioning procedure for determining the position of the roaming mobile station, wherein the second MPC transmits the position information of the roaming mobile station to the first MPC. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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20. A method for communicating roaming information among at least two PLMNs, comprising:
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transmitting a position request over a communication channel requesting position information of a roaming mobile station from a first Mobile Positioning Center (MPC) located in a first PLMN; and
receiving the position request over the communication channel at a second MPC located in a second PLMN; and
initiating a positioning procedure for determining the position of the roaming mobile station. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification